./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW --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 32bit --witnessprinter.graph.data.programhash 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- 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-4e7fbc6 [2022-11-23 14:56:27,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:56:27,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:56:27,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:56:27,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:56:27,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:56:27,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:56:27,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:56:27,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:56:27,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:56:27,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:56:27,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:56:27,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:56:27,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:56:27,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:56:27,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:56:27,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:56:27,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:56:27,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:56:27,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:56:27,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:56:27,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:56:27,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:56:27,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:56:27,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:56:27,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:56:27,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:56:27,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:56:27,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:56:27,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:56:27,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:56:27,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:56:27,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:56:27,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:56:27,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:56:27,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:56:27,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:56:27,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:56:27,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:56:27,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:56:27,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:56:27,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 14:56:27,856 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:56:27,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:56:27,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:56:27,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:56:27,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:56:27,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:56:27,858 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:56:27,859 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:56:27,859 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:56:27,859 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:56:27,860 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:56:27,860 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:56:27,860 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:56:27,860 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:56:27,861 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:56:27,861 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:56:27,861 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:56:27,862 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:56:27,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:56:27,867 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:56:27,867 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:56:27,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:56:27,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:56:27,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:56:27,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:56:27,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:56:27,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:56:27,869 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:56:27,870 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:56:27,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:56:27,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:56:27,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:56:27,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:56:27,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:56:27,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:56:27,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:56:27,873 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:56:27,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:56:27,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:56:27,873 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:56:27,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:56:27,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:56:27,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:56:27,875 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_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2022-11-23 14:56:28,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:56:28,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:56:28,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:56:28,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:56:28,204 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:56:28,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-23 14:56:31,379 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:56:31,633 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:56:31,634 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-23 14:56:31,650 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/data/f3cd058c0/b30cf81976d24ba1b869da081bde6822/FLAG7fa130cb4 [2022-11-23 14:56:31,680 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/data/f3cd058c0/b30cf81976d24ba1b869da081bde6822 [2022-11-23 14:56:31,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:56:31,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:56:31,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:56:31,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:56:31,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:56:31,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:56:31" (1/1) ... [2022-11-23 14:56:31,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a75b86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:31, skipping insertion in model container [2022-11-23 14:56:31,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:56:31" (1/1) ... [2022-11-23 14:56:31,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:56:31,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:56:32,352 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-23 14:56:32,353 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-23 14:56:32,353 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-23 14:56:32,354 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-23 14:56:32,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:56:32,421 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:56:32,457 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-23 14:56:32,457 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-23 14:56:32,457 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-23 14:56:32,458 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-23 14:56:32,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:56:32,527 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:56:32,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32 WrapperNode [2022-11-23 14:56:32,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:56:32,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:56:32,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:56:32,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:56:32,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,613 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 166 [2022-11-23 14:56:32,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:56:32,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:56:32,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:56:32,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:56:32,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,646 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:56:32,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:56:32,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:56:32,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:56:32,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (1/1) ... [2022-11-23 14:56:32,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:56:32,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:56:32,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:56:32,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:56:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-23 14:56:32,726 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-23 14:56:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:56:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:56:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:56:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:56:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:56:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 14:56:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:56:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:56:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:56:32,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:56:32,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:56:32,729 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 14:56:32,882 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:56:32,884 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:56:33,279 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:56:33,287 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:56:33,288 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 14:56:33,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:56:33 BoogieIcfgContainer [2022-11-23 14:56:33,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:56:33,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:56:33,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:56:33,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:56:33,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:56:31" (1/3) ... [2022-11-23 14:56:33,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508fb544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:56:33, skipping insertion in model container [2022-11-23 14:56:33,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:56:32" (2/3) ... [2022-11-23 14:56:33,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508fb544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:56:33, skipping insertion in model container [2022-11-23 14:56:33,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:56:33" (3/3) ... [2022-11-23 14:56:33,301 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2022-11-23 14:56:33,310 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 14:56:33,321 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:56:33,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-23 14:56:33,322 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 14:56:33,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 14:56:33,550 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:56:33,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 259 transitions, 528 flow [2022-11-23 14:56:33,569 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 259 transitions, 528 flow [2022-11-23 14:56:33,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 259 transitions, 528 flow [2022-11-23 14:56:33,716 INFO L130 PetriNetUnfolder]: 17/257 cut-off events. [2022-11-23 14:56:33,717 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 14:56:33,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 257 events. 17/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 580 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 198. Up to 2 conditions per place. [2022-11-23 14:56:33,735 INFO L119 LiptonReduction]: Number of co-enabled transitions 7600 [2022-11-23 14:57:12,193 WARN L233 SmtUtils]: Spent 13.40s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:57:18,391 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:57:37,591 WARN L233 SmtUtils]: Spent 19.20s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:57:45,387 WARN L233 SmtUtils]: Spent 7.79s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:58:05,383 WARN L233 SmtUtils]: Spent 19.75s on a formula simplification. DAG size of input: 185 DAG size of output: 183 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:58:13,488 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:58:28,038 WARN L233 SmtUtils]: Spent 14.55s on a formula simplification. DAG size of input: 185 DAG size of output: 183 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:58:36,523 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:58:46,827 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:58:59,882 WARN L233 SmtUtils]: Spent 13.05s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:59:08,673 WARN L233 SmtUtils]: Spent 8.79s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-23 14:59:08,677 INFO L134 LiptonReduction]: Checked pairs total: 7592 [2022-11-23 14:59:08,677 INFO L136 LiptonReduction]: Total number of compositions: 275 [2022-11-23 14:59:08,684 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 92 flow [2022-11-23 14:59:08,751 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 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) [2022-11-23 14:59:08,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:59:08,801 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;@12cb15c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:59:08,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-23 14:59:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 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) [2022-11-23 14:59:08,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:59:08,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:08,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:59:08,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash 859393, now seen corresponding path program 1 times [2022-11-23 14:59:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:08,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309709049] [2022-11-23 14:59:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:08,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:59:09,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:09,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309709049] [2022-11-23 14:59:09,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309709049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:09,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:09,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:59:09,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845277650] [2022-11-23 14:59:09,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:09,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:59:09,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:09,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:59:09,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:59:09,146 INFO L87 Difference]: Start difference. First operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-23 14:59:09,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:09,423 INFO L93 Difference]: Finished difference Result 271 states and 701 transitions. [2022-11-23 14:59:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:59:09,426 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 14:59:09,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:09,451 INFO L225 Difference]: With dead ends: 271 [2022-11-23 14:59:09,452 INFO L226 Difference]: Without dead ends: 271 [2022-11-23 14:59:09,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:59:09,458 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:09,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:59:09,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-23 14:59:09,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2022-11-23 14:59:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 242 states have (on average 2.896694214876033) internal successors, (701), 270 states have internal predecessors, (701), 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) [2022-11-23 14:59:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 701 transitions. [2022-11-23 14:59:09,550 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 701 transitions. Word has length 3 [2022-11-23 14:59:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:09,551 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 701 transitions. [2022-11-23 14:59:09,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-23 14:59:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 701 transitions. [2022-11-23 14:59:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:59:09,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:09,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:59:09,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:59:09,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash 859189, now seen corresponding path program 1 times [2022-11-23 14:59:09,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:09,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278607793] [2022-11-23 14:59:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:09,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:09,576 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:09,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965173235] [2022-11-23 14:59:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:09,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:09,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:09,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:09,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:59:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:09,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:59:09,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:59:09,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:59:09,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:09,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278607793] [2022-11-23 14:59:09,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:59:09,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965173235] [2022-11-23 14:59:09,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965173235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:09,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:09,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:59:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910913318] [2022-11-23 14:59:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:09,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:59:09,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:09,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:59:09,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:09,748 INFO L87 Difference]: Start difference. First operand 271 states and 701 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-23 14:59:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:10,089 INFO L93 Difference]: Finished difference Result 273 states and 705 transitions. [2022-11-23 14:59:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:10,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 14:59:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:10,092 INFO L225 Difference]: With dead ends: 273 [2022-11-23 14:59:10,093 INFO L226 Difference]: Without dead ends: 273 [2022-11-23 14:59:10,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:10,094 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:10,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:59:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-11-23 14:59:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-11-23 14:59:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 244 states have (on average 2.889344262295082) internal successors, (705), 272 states have internal predecessors, (705), 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) [2022-11-23 14:59:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 705 transitions. [2022-11-23 14:59:10,112 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 705 transitions. Word has length 3 [2022-11-23 14:59:10,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:10,112 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 705 transitions. [2022-11-23 14:59:10,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-23 14:59:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 705 transitions. [2022-11-23 14:59:10,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:59:10,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:10,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:59:10,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:10,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 14:59:10,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:10,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash 859388, now seen corresponding path program 1 times [2022-11-23 14:59:10,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:10,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602974448] [2022-11-23 14:59:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:10,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:10,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:10,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314824379] [2022-11-23 14:59:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:10,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:10,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:10,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:10,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:59:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:10,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:59:10,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:59:10,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:59:10,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:10,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602974448] [2022-11-23 14:59:10,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:59:10,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314824379] [2022-11-23 14:59:10,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314824379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:10,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:10,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:59:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993432095] [2022-11-23 14:59:10,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:10,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:59:10,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:10,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:59:10,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:10,562 INFO L87 Difference]: Start difference. First operand 273 states and 705 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-23 14:59:10,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:10,742 INFO L93 Difference]: Finished difference Result 272 states and 703 transitions. [2022-11-23 14:59:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:10,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 14:59:10,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:10,746 INFO L225 Difference]: With dead ends: 272 [2022-11-23 14:59:10,746 INFO L226 Difference]: Without dead ends: 272 [2022-11-23 14:59:10,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:10,747 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:10,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:59:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-23 14:59:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-11-23 14:59:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 244 states have (on average 2.8811475409836067) internal successors, (703), 271 states have internal predecessors, (703), 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) [2022-11-23 14:59:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2022-11-23 14:59:10,777 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 3 [2022-11-23 14:59:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:10,777 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2022-11-23 14:59:10,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-23 14:59:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2022-11-23 14:59:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:59:10,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:10,778 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-11-23 14:59:10,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:10,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:10,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:10,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:10,985 INFO L85 PathProgramCache]: Analyzing trace with hash 825844054, now seen corresponding path program 1 times [2022-11-23 14:59:10,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:10,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786461439] [2022-11-23 14:59:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:10,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:11,012 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:11,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328032163] [2022-11-23 14:59:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:11,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:11,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:11,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:11,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:59:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:11,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:59:11,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:59:11,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:59:11,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:11,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786461439] [2022-11-23 14:59:11,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:59:11,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328032163] [2022-11-23 14:59:11,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328032163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:11,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:11,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:59:11,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353458537] [2022-11-23 14:59:11,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:11,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:59:11,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:11,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:59:11,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:11,158 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:11,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:11,361 INFO L93 Difference]: Finished difference Result 276 states and 707 transitions. [2022-11-23 14:59:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:11,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 14:59:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:11,364 INFO L225 Difference]: With dead ends: 276 [2022-11-23 14:59:11,364 INFO L226 Difference]: Without dead ends: 276 [2022-11-23 14:59:11,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:11,365 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:11,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:59:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-23 14:59:11,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2022-11-23 14:59:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 246 states have (on average 2.8739837398373984) internal successors, (707), 273 states have internal predecessors, (707), 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) [2022-11-23 14:59:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 707 transitions. [2022-11-23 14:59:11,379 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 707 transitions. Word has length 5 [2022-11-23 14:59:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:11,379 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 707 transitions. [2022-11-23 14:59:11,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 707 transitions. [2022-11-23 14:59:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:59:11,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:11,380 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 14:59:11,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:11,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:11,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:11,586 INFO L85 PathProgramCache]: Analyzing trace with hash -166755231, now seen corresponding path program 1 times [2022-11-23 14:59:11,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:11,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737773173] [2022-11-23 14:59:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:11,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:11,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:11,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431311549] [2022-11-23 14:59:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:11,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:11,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:11,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:11,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:59:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:11,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:59:11,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:59:11,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:59:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:59:11,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:11,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737773173] [2022-11-23 14:59:11,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:59:11,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431311549] [2022-11-23 14:59:11,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431311549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:59:11,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [817572266] [2022-11-23 14:59:11,910 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 14:59:11,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:59:11,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-23 14:59:11,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511563790] [2022-11-23 14:59:11,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:59:11,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:59:11,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:11,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:59:11,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:59:11,914 INFO L87 Difference]: Start difference. First operand 274 states and 707 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-23 14:59:12,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:12,371 INFO L93 Difference]: Finished difference Result 286 states and 719 transitions. [2022-11-23 14:59:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:59:12,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:59:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:12,374 INFO L225 Difference]: With dead ends: 286 [2022-11-23 14:59:12,374 INFO L226 Difference]: Without dead ends: 286 [2022-11-23 14:59:12,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:59:12,375 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:12,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:59:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-23 14:59:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2022-11-23 14:59:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8531746031746033) internal successors, (719), 279 states have internal predecessors, (719), 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) [2022-11-23 14:59:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 719 transitions. [2022-11-23 14:59:12,412 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 719 transitions. Word has length 6 [2022-11-23 14:59:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:12,412 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 719 transitions. [2022-11-23 14:59:12,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-23 14:59:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 719 transitions. [2022-11-23 14:59:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:59:12,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:12,414 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-11-23 14:59:12,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:12,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:12,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:12,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash -953201642, now seen corresponding path program 2 times [2022-11-23 14:59:12,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:12,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758367358] [2022-11-23 14:59:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:12,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:12,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931606042] [2022-11-23 14:59:12,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:59:12,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:12,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:12,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:12,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:59:12,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 14:59:12,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:59:12,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:59:12,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 14:59:12,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:59:12,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:12,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758367358] [2022-11-23 14:59:12,969 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:59:12,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931606042] [2022-11-23 14:59:12,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931606042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:12,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:12,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:59:12,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412042892] [2022-11-23 14:59:12,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:12,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:59:12,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:12,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:59:12,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:12,972 INFO L87 Difference]: Start difference. First operand 280 states and 719 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:13,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:13,209 INFO L93 Difference]: Finished difference Result 280 states and 717 transitions. [2022-11-23 14:59:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:13,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 14:59:13,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:13,212 INFO L225 Difference]: With dead ends: 280 [2022-11-23 14:59:13,212 INFO L226 Difference]: Without dead ends: 280 [2022-11-23 14:59:13,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:13,213 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:13,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:59:13,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-23 14:59:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-11-23 14:59:13,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8452380952380953) internal successors, (717), 279 states have internal predecessors, (717), 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) [2022-11-23 14:59:13,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 717 transitions. [2022-11-23 14:59:13,225 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 717 transitions. Word has length 9 [2022-11-23 14:59:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:13,225 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 717 transitions. [2022-11-23 14:59:13,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:13,225 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 717 transitions. [2022-11-23 14:59:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:59:13,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:13,226 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-11-23 14:59:13,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-23 14:59:13,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:13,432 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:13,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash 515527231, now seen corresponding path program 3 times [2022-11-23 14:59:13,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:13,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408654086] [2022-11-23 14:59:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:13,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:13,524 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:13,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989091631] [2022-11-23 14:59:13,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:59:13,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:13,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:13,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:13,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:59:14,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:59:14,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:59:14,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:59:14,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:59:14,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:59:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:59:14,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:14,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408654086] [2022-11-23 14:59:14,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:59:14,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989091631] [2022-11-23 14:59:14,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989091631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:59:14,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [826573404] [2022-11-23 14:59:14,181 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 14:59:14,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:59:14,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-23 14:59:14,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805399702] [2022-11-23 14:59:14,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:59:14,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:59:14,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:59:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:59:14,183 INFO L87 Difference]: Start difference. First operand 280 states and 717 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:15,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:15,166 INFO L93 Difference]: Finished difference Result 308 states and 741 transitions. [2022-11-23 14:59:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:59:15,167 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 14:59:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:15,169 INFO L225 Difference]: With dead ends: 308 [2022-11-23 14:59:15,169 INFO L226 Difference]: Without dead ends: 308 [2022-11-23 14:59:15,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:59:15,170 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:15,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:59:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-23 14:59:15,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2022-11-23 14:59:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 264 states have (on average 2.8068181818181817) internal successors, (741), 291 states have internal predecessors, (741), 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) [2022-11-23 14:59:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 741 transitions. [2022-11-23 14:59:15,181 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 741 transitions. Word has length 10 [2022-11-23 14:59:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:15,182 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 741 transitions. [2022-11-23 14:59:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 741 transitions. [2022-11-23 14:59:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:59:15,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:15,183 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-11-23 14:59:15,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:15,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 14:59:15,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:15,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1085032991, now seen corresponding path program 4 times [2022-11-23 14:59:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:15,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049639880] [2022-11-23 14:59:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:15,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:15,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:15,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37851526] [2022-11-23 14:59:15,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:59:15,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:15,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:15,568 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:15,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:59:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:16,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:59:16,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:59:16,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:59:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:59:16,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:16,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049639880] [2022-11-23 14:59:16,894 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:59:16,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37851526] [2022-11-23 14:59:16,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37851526] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:59:16,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1657533118] [2022-11-23 14:59:16,895 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 14:59:16,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:59:16,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-23 14:59:16,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282114586] [2022-11-23 14:59:16,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:59:16,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 14:59:16,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:16,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 14:59:16,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-23 14:59:16,897 INFO L87 Difference]: Start difference. First operand 292 states and 741 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:19,290 INFO L93 Difference]: Finished difference Result 356 states and 789 transitions. [2022-11-23 14:59:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 14:59:19,290 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 14:59:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:19,293 INFO L225 Difference]: With dead ends: 356 [2022-11-23 14:59:19,293 INFO L226 Difference]: Without dead ends: 356 [2022-11-23 14:59:19,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-23 14:59:19,294 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 124 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:19,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 0 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 14:59:19,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-23 14:59:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 316. [2022-11-23 14:59:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 288 states have (on average 2.7395833333333335) internal successors, (789), 315 states have internal predecessors, (789), 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) [2022-11-23 14:59:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 789 transitions. [2022-11-23 14:59:19,305 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 789 transitions. Word has length 16 [2022-11-23 14:59:19,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:19,305 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 789 transitions. [2022-11-23 14:59:19,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 789 transitions. [2022-11-23 14:59:19,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 14:59:19,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:19,307 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-23 14:59:19,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:19,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 14:59:19,518 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1260781089, now seen corresponding path program 5 times [2022-11-23 14:59:19,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:19,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974592830] [2022-11-23 14:59:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:19,782 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:19,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958291889] [2022-11-23 14:59:19,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:59:19,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:19,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:19,783 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:19,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 14:59:20,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 14:59:20,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:59:20,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:59:20,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-23 14:59:21,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:59:21,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:21,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974592830] [2022-11-23 14:59:21,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:59:21,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958291889] [2022-11-23 14:59:21,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958291889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:21,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:21,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:21,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329676420] [2022-11-23 14:59:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:21,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:59:21,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:59:21,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:59:21,046 INFO L87 Difference]: Start difference. First operand 316 states and 789 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:21,337 INFO L93 Difference]: Finished difference Result 314 states and 766 transitions. [2022-11-23 14:59:21,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:59:21,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-23 14:59:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:21,340 INFO L225 Difference]: With dead ends: 314 [2022-11-23 14:59:21,340 INFO L226 Difference]: Without dead ends: 314 [2022-11-23 14:59:21,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:59:21,341 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:21,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:59:21,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-23 14:59:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2022-11-23 14:59:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 288 states have (on average 2.6597222222222223) internal successors, (766), 313 states have internal predecessors, (766), 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) [2022-11-23 14:59:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 766 transitions. [2022-11-23 14:59:21,351 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 766 transitions. Word has length 28 [2022-11-23 14:59:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:21,352 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 766 transitions. [2022-11-23 14:59:21,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:21,352 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 766 transitions. [2022-11-23 14:59:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 14:59:21,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:21,353 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-23 14:59:21,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-23 14:59:21,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:21,561 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:21,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1260780998, now seen corresponding path program 1 times [2022-11-23 14:59:21,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:21,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786665039] [2022-11-23 14:59:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:21,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:21,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:21,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817968754] [2022-11-23 14:59:21,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:21,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:21,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:21,843 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:21,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 14:59:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:24,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 5508 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 14:59:24,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:59:24,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:59:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:59:24,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:24,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786665039] [2022-11-23 14:59:24,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:59:24,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817968754] [2022-11-23 14:59:24,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817968754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:59:24,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1197636871] [2022-11-23 14:59:24,960 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 14:59:24,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:59:24,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-23 14:59:24,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856044290] [2022-11-23 14:59:24,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:59:24,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 14:59:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 14:59:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-23 14:59:24,963 INFO L87 Difference]: Start difference. First operand 314 states and 766 transitions. Second operand has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:28,036 INFO L93 Difference]: Finished difference Result 358 states and 790 transitions. [2022-11-23 14:59:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 14:59:28,036 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-23 14:59:28,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:28,038 INFO L225 Difference]: With dead ends: 358 [2022-11-23 14:59:28,039 INFO L226 Difference]: Without dead ends: 358 [2022-11-23 14:59:28,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-23 14:59:28,040 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:28,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 14:59:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-23 14:59:28,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 330. [2022-11-23 14:59:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 304 states have (on average 2.598684210526316) internal successors, (790), 329 states have internal predecessors, (790), 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) [2022-11-23 14:59:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 790 transitions. [2022-11-23 14:59:28,078 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 790 transitions. Word has length 28 [2022-11-23 14:59:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:28,079 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 790 transitions. [2022-11-23 14:59:28,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:59:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 790 transitions. [2022-11-23 14:59:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:59:28,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:28,080 INFO L195 NwaCegarLoop]: trace histogram [31, 2, 1, 1, 1] [2022-11-23 14:59:28,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:28,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:28,291 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:28,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1351263046, now seen corresponding path program 2 times [2022-11-23 14:59:28,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:28,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601433814] [2022-11-23 14:59:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:28,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:28,639 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:28,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236851444] [2022-11-23 14:59:28,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:59:28,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:28,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:28,653 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:28,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 14:59:30,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 14:59:30,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:59:30,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:59:30,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-11-23 14:59:30,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:59:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-11-23 14:59:30,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:30,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601433814] [2022-11-23 14:59:30,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:59:30,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236851444] [2022-11-23 14:59:30,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236851444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:59:30,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1660848603] [2022-11-23 14:59:30,661 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 14:59:30,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:59:30,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-23 14:59:30,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835019213] [2022-11-23 14:59:30,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:59:30,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:59:30,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:30,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:59:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:59:30,664 INFO L87 Difference]: Start difference. First operand 330 states and 790 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-23 14:59:31,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:31,884 INFO L93 Difference]: Finished difference Result 330 states and 787 transitions. [2022-11-23 14:59:31,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:59:31,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-23 14:59:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:31,886 INFO L225 Difference]: With dead ends: 330 [2022-11-23 14:59:31,886 INFO L226 Difference]: Without dead ends: 330 [2022-11-23 14:59:31,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:59:31,887 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:31,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:59:31,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-23 14:59:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-11-23 14:59:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 304 states have (on average 2.588815789473684) internal successors, (787), 329 states have internal predecessors, (787), 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) [2022-11-23 14:59:31,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 787 transitions. [2022-11-23 14:59:31,902 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 787 transitions. Word has length 36 [2022-11-23 14:59:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:31,902 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 787 transitions. [2022-11-23 14:59:31,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-23 14:59:31,903 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 787 transitions. [2022-11-23 14:59:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-23 14:59:31,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:31,904 INFO L195 NwaCegarLoop]: trace histogram [34, 2, 1, 1, 1] [2022-11-23 14:59:31,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:32,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 14:59:32,114 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 14:59:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:32,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1255362705, now seen corresponding path program 3 times [2022-11-23 14:59:32,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:32,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464213099] [2022-11-23 14:59:32,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:32,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:32,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:59:32,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664536705] [2022-11-23 14:59:32,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:59:32,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:32,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:32,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:32,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 14:59:57,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:59:57,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:59:57,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 8082 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:59:57,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-23 14:59:57,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:00:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-23 15:00:02,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:02,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464213099] [2022-11-23 15:00:02,413 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:00:02,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664536705] [2022-11-23 15:00:02,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664536705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:00:02,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [774438292] [2022-11-23 15:00:02,414 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 15:00:02,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:00:02,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-23 15:00:02,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819344286] [2022-11-23 15:00:02,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 15:00:02,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:00:02,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:00:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:00:02,417 INFO L87 Difference]: Start difference. First operand 330 states and 787 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-11-23 15:00:07,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-23 15:00:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:07,464 INFO L93 Difference]: Finished difference Result 624 states and 1485 transitions. [2022-11-23 15:00:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:00:07,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-23 15:00:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:07,468 INFO L225 Difference]: With dead ends: 624 [2022-11-23 15:00:07,468 INFO L226 Difference]: Without dead ends: 624 [2022-11-23 15:00:07,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:00:07,469 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:07,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 15:00:07,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-11-23 15:00:07,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 329. [2022-11-23 15:00:07,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 305 states have (on average 2.4918032786885247) internal successors, (760), 328 states have internal predecessors, (760), 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) [2022-11-23 15:00:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 760 transitions. [2022-11-23 15:00:07,482 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 760 transitions. Word has length 39 [2022-11-23 15:00:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:07,482 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 760 transitions. [2022-11-23 15:00:07,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-11-23 15:00:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 760 transitions. [2022-11-23 15:00:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 15:00:07,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:07,484 INFO L195 NwaCegarLoop]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:00:07,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 15:00:07,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 15:00:07,698 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 15:00:07,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2078445085, now seen corresponding path program 1 times [2022-11-23 15:00:07,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:07,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791277079] [2022-11-23 15:00:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:07,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:08,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:00:08,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518716328] [2022-11-23 15:00:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:08,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:08,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:00:08,383 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:00:08,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 15:00:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:13,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 14227 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:00:13,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:00:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-23 15:00:13,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:00:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-23 15:00:14,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:14,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791277079] [2022-11-23 15:00:14,056 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:00:14,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518716328] [2022-11-23 15:00:14,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518716328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:00:14,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [164076472] [2022-11-23 15:00:14,057 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 15:00:14,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:00:14,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-23 15:00:14,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3489507] [2022-11-23 15:00:14,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 15:00:14,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:00:14,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:14,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:00:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:00:14,060 INFO L87 Difference]: Start difference. First operand 329 states and 760 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:00:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:14,612 INFO L93 Difference]: Finished difference Result 457 states and 892 transitions. [2022-11-23 15:00:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:00:14,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-23 15:00:14,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:14,615 INFO L225 Difference]: With dead ends: 457 [2022-11-23 15:00:14,615 INFO L226 Difference]: Without dead ends: 457 [2022-11-23 15:00:14,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:00:14,616 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:14,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:00:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-23 15:00:14,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2022-11-23 15:00:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 433 states have (on average 2.0600461893764432) internal successors, (892), 456 states have internal predecessors, (892), 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) [2022-11-23 15:00:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 892 transitions. [2022-11-23 15:00:14,627 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 892 transitions. Word has length 71 [2022-11-23 15:00:14,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:14,627 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 892 transitions. [2022-11-23 15:00:14,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:00:14,628 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 892 transitions. [2022-11-23 15:00:14,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-23 15:00:14,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:14,631 INFO L195 NwaCegarLoop]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:00:14,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 15:00:14,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:14,851 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 15:00:14,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:14,851 INFO L85 PathProgramCache]: Analyzing trace with hash -996794649, now seen corresponding path program 2 times [2022-11-23 15:00:14,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:14,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560633649] [2022-11-23 15:00:14,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:14,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:16,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:00:16,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328483258] [2022-11-23 15:00:16,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:00:16,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:16,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:00:16,860 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:00:16,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 15:00:24,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 15:00:24,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:00:24,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:00:24,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:00:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2022-11-23 15:00:24,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:00:24,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:24,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560633649] [2022-11-23 15:00:24,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:00:24,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328483258] [2022-11-23 15:00:24,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328483258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:24,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:00:24,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:00:24,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794930303] [2022-11-23 15:00:24,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:24,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:00:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:00:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:00:24,288 INFO L87 Difference]: Start difference. First operand 457 states and 892 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-23 15:00:24,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:24,603 INFO L93 Difference]: Finished difference Result 433 states and 831 transitions. [2022-11-23 15:00:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:00:24,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2022-11-23 15:00:24,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:24,606 INFO L225 Difference]: With dead ends: 433 [2022-11-23 15:00:24,606 INFO L226 Difference]: Without dead ends: 433 [2022-11-23 15:00:24,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:00:24,607 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:24,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:00:24,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-23 15:00:24,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-11-23 15:00:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 414 states have (on average 2.0072463768115942) internal successors, (831), 432 states have internal predecessors, (831), 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) [2022-11-23 15:00:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 831 transitions. [2022-11-23 15:00:24,619 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 831 transitions. Word has length 199 [2022-11-23 15:00:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:24,621 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 831 transitions. [2022-11-23 15:00:24,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-23 15:00:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 831 transitions. [2022-11-23 15:00:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-23 15:00:24,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:24,626 INFO L195 NwaCegarLoop]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:00:24,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 15:00:24,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 15:00:24,843 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 15:00:24,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash -996794696, now seen corresponding path program 1 times [2022-11-23 15:00:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:24,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682831008] [2022-11-23 15:00:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:24,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:27,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:00:27,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829391607] [2022-11-23 15:00:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:27,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:27,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:00:27,031 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:00:27,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 15:00:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:43,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 42462 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:00:43,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:00:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2022-11-23 15:00:43,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:00:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2022-11-23 15:00:44,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:44,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682831008] [2022-11-23 15:00:44,319 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:00:44,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829391607] [2022-11-23 15:00:44,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829391607] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:00:44,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [800990962] [2022-11-23 15:00:44,319 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 15:00:44,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:00:44,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-23 15:00:44,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041147895] [2022-11-23 15:00:44,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 15:00:44,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:00:44,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:44,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:00:44,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:00:44,322 INFO L87 Difference]: Start difference. First operand 433 states and 831 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 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) [2022-11-23 15:00:45,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:45,257 INFO L93 Difference]: Finished difference Result 561 states and 963 transitions. [2022-11-23 15:00:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:00:45,258 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2022-11-23 15:00:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:45,261 INFO L225 Difference]: With dead ends: 561 [2022-11-23 15:00:45,261 INFO L226 Difference]: Without dead ends: 561 [2022-11-23 15:00:45,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 382 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:00:45,264 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:45,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 15:00:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-23 15:00:45,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-11-23 15:00:45,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 542 states have (on average 1.7767527675276753) internal successors, (963), 560 states have internal predecessors, (963), 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) [2022-11-23 15:00:45,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 963 transitions. [2022-11-23 15:00:45,281 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 963 transitions. Word has length 199 [2022-11-23 15:00:45,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:45,281 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 963 transitions. [2022-11-23 15:00:45,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 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) [2022-11-23 15:00:45,282 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 963 transitions. [2022-11-23 15:00:45,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-23 15:00:45,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:45,288 INFO L195 NwaCegarLoop]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:00:45,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 15:00:45,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 15:00:45,502 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-23 15:00:45,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:45,502 INFO L85 PathProgramCache]: Analyzing trace with hash 473598908, now seen corresponding path program 2 times [2022-11-23 15:00:45,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:45,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347291338] [2022-11-23 15:00:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:45,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:49,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:00:49,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900569098] [2022-11-23 15:00:49,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:00:49,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:49,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:00:49,158 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:00:49,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4986253-e985-4963-8ec5-4ae3ead046a2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process