./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh --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 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 --- 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-2329fc7 [2022-12-14 09:25:25,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:25:25,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:25:25,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:25:25,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:25:25,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:25:25,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:25:25,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:25:25,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:25:25,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:25:25,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:25:25,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:25:25,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:25:25,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:25:25,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:25:25,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:25:25,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:25:25,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:25:25,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:25:25,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:25:25,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:25:25,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:25:25,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:25:25,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:25:25,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:25:25,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:25:25,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:25:25,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:25:25,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:25:25,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:25:25,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:25:25,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:25:25,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:25:25,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:25:25,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:25:25,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:25:25,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:25:25,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:25:25,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:25:25,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:25:25,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:25:25,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 09:25:25,682 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:25:25,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:25:25,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:25:25,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:25:25,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:25:25,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:25:25,683 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:25:25,684 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:25:25,684 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:25:25,684 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:25:25,684 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:25:25,684 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:25:25,684 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:25:25,685 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:25:25,685 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:25:25,685 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:25:25,685 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:25:25,685 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:25:25,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:25:25,686 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:25:25,686 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 09:25:25,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:25:25,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:25:25,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:25:25,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:25:25,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:25:25,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:25:25,687 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 09:25:25,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:25:25,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:25:25,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:25:25,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:25:25,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:25:25,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:25:25,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:25:25,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:25:25,689 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:25:25,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:25:25,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:25:25,689 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:25:25,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:25:25,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:25:25,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:25:25,689 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_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 [2022-12-14 09:25:25,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:25:25,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:25:25,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:25:25,886 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:25:25,886 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:25:25,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2022-12-14 09:25:28,498 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:25:28,648 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:25:28,649 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2022-12-14 09:25:28,654 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/data/f3faff7a5/e486355f862f48f28dc56e6ab9d7d239/FLAGabc0534f8 [2022-12-14 09:25:28,665 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/data/f3faff7a5/e486355f862f48f28dc56e6ab9d7d239 [2022-12-14 09:25:28,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:25:28,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:25:28,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:25:28,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:25:28,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:25:28,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e0f030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28, skipping insertion in model container [2022-12-14 09:25:28,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:25:28,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:25:28,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:28,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:28,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:28,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:28,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:28,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:28,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:28,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:28,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:28,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:28,854 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2022-12-14 09:25:28,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:25:28,870 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:25:28,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:28,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:28,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:28,887 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:28,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:28,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:28,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:28,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:28,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:28,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:28,898 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2022-12-14 09:25:28,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:25:28,915 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:25:28,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28 WrapperNode [2022-12-14 09:25:28,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:25:28,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:25:28,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:25:28,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:25:28,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,957 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 271 [2022-12-14 09:25:28,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:25:28,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:25:28,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:25:28,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:25:28,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,988 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:28,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:25:28,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:25:28,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:25:28,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:25:28,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (1/1) ... [2022-12-14 09:25:29,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:25:29,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:29,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:25:29,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:25:29,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:25:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:25:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:25:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:25:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 09:25:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 09:25:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 09:25:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 09:25:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-14 09:25:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-14 09:25:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:25:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 09:25:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 09:25:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 09:25:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:25:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:25:29,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:25:29,061 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 09:25:29,158 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:25:29,161 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:25:29,490 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:25:29,583 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:25:29,583 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 09:25:29,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:25:29 BoogieIcfgContainer [2022-12-14 09:25:29,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:25:29,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:25:29,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:25:29,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:25:29,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:25:28" (1/3) ... [2022-12-14 09:25:29,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f21b4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:25:29, skipping insertion in model container [2022-12-14 09:25:29,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:28" (2/3) ... [2022-12-14 09:25:29,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f21b4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:25:29, skipping insertion in model container [2022-12-14 09:25:29,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:25:29" (3/3) ... [2022-12-14 09:25:29,591 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2022-12-14 09:25:29,597 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 09:25:29,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:25:29,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-12-14 09:25:29,604 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 09:25:29,662 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 09:25:29,686 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:25:29,697 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 250 transitions, 524 flow [2022-12-14 09:25:29,699 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 250 transitions, 524 flow [2022-12-14 09:25:29,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 250 transitions, 524 flow [2022-12-14 09:25:29,760 INFO L130 PetriNetUnfolder]: 18/247 cut-off events. [2022-12-14 09:25:29,760 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-14 09:25:29,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 247 events. 18/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 231 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 196. Up to 3 conditions per place. [2022-12-14 09:25:29,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 3440 [2022-12-14 09:25:36,801 INFO L134 LiptonReduction]: Checked pairs total: 7023 [2022-12-14 09:25:36,802 INFO L136 LiptonReduction]: Total number of compositions: 272 [2022-12-14 09:25:36,809 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 57 transitions, 138 flow [2022-12-14 09:25:36,887 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1941 states, 1619 states have (on average 4.1266213712168005) internal successors, (6681), 1940 states have internal predecessors, (6681), 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) [2022-12-14 09:25:36,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:25:36,905 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;@28d80c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:25:36,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2022-12-14 09:25:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 1941 states, 1619 states have (on average 4.1266213712168005) internal successors, (6681), 1940 states have internal predecessors, (6681), 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) [2022-12-14 09:25:36,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 09:25:36,920 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:36,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 09:25:36,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash 37875, now seen corresponding path program 1 times [2022-12-14 09:25:36,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:36,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310648616] [2022-12-14 09:25:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:37,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:37,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310648616] [2022-12-14 09:25:37,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310648616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:37,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:37,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 09:25:37,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527952499] [2022-12-14 09:25:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:37,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:37,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:37,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:25:37,148 INFO L87 Difference]: Start difference. First operand has 1941 states, 1619 states have (on average 4.1266213712168005) internal successors, (6681), 1940 states have internal predecessors, (6681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 09:25:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:37,301 INFO L93 Difference]: Finished difference Result 2273 states and 7569 transitions. [2022-12-14 09:25:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:37,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 09:25:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:37,324 INFO L225 Difference]: With dead ends: 2273 [2022-12-14 09:25:37,325 INFO L226 Difference]: Without dead ends: 2273 [2022-12-14 09:25:37,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:25:37,327 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:37,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2022-12-14 09:25:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 1141. [2022-12-14 09:25:37,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 994 states have (on average 3.8138832997987926) internal successors, (3791), 1140 states have internal predecessors, (3791), 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) [2022-12-14 09:25:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3791 transitions. [2022-12-14 09:25:37,402 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3791 transitions. Word has length 2 [2022-12-14 09:25:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:37,402 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 3791 transitions. [2022-12-14 09:25:37,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 09:25:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3791 transitions. [2022-12-14 09:25:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 09:25:37,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:37,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 09:25:37,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:25:37,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:37,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1177249, now seen corresponding path program 1 times [2022-12-14 09:25:37,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:37,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334458115] [2022-12-14 09:25:37,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:37,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:37,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:37,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334458115] [2022-12-14 09:25:37,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334458115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:37,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:37,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:25:37,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290817328] [2022-12-14 09:25:37,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:37,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:37,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:37,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:37,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:25:37,469 INFO L87 Difference]: Start difference. First operand 1141 states and 3791 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) [2022-12-14 09:25:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:37,530 INFO L93 Difference]: Finished difference Result 1139 states and 3789 transitions. [2022-12-14 09:25:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:37,531 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 [2022-12-14 09:25:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:37,535 INFO L225 Difference]: With dead ends: 1139 [2022-12-14 09:25:37,536 INFO L226 Difference]: Without dead ends: 1139 [2022-12-14 09:25:37,536 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 [2022-12-14 09:25:37,537 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:37,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:25:37,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-12-14 09:25:37,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2022-12-14 09:25:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 994 states have (on average 3.8118712273641853) internal successors, (3789), 1138 states have internal predecessors, (3789), 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) [2022-12-14 09:25:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 3789 transitions. [2022-12-14 09:25:37,562 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 3789 transitions. Word has length 3 [2022-12-14 09:25:37,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:37,562 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 3789 transitions. [2022-12-14 09:25:37,562 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) [2022-12-14 09:25:37,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 3789 transitions. [2022-12-14 09:25:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 09:25:37,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:37,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 09:25:37,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:25:37,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:37,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1177281, now seen corresponding path program 1 times [2022-12-14 09:25:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:37,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017947485] [2022-12-14 09:25:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:37,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:37,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:37,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017947485] [2022-12-14 09:25:37,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017947485] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:37,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127065059] [2022-12-14 09:25:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:37,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:37,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:37,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:37,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:25:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:37,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:25:37,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:37,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:37,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127065059] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:25:37,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1994381965] [2022-12-14 09:25:37,724 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:337) 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) [2022-12-14 09:25:37,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:25:37,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-14 09:25:37,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995565233] [2022-12-14 09:25:37,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:25:37,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 09:25:37,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:37,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 09:25:37,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:25:37,727 INFO L87 Difference]: Start difference. First operand 1139 states and 3789 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:38,040 INFO L93 Difference]: Finished difference Result 5673 states and 18913 transitions. [2022-12-14 09:25:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:25:38,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 09:25:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:38,068 INFO L225 Difference]: With dead ends: 5673 [2022-12-14 09:25:38,068 INFO L226 Difference]: Without dead ends: 5673 [2022-12-14 09:25:38,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:25:38,069 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 234 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:38,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 18 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:25:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5673 states. [2022-12-14 09:25:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5673 to 1145. [2022-12-14 09:25:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1000 states have (on average 3.801) internal successors, (3801), 1144 states have internal predecessors, (3801), 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) [2022-12-14 09:25:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 3801 transitions. [2022-12-14 09:25:38,135 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 3801 transitions. Word has length 3 [2022-12-14 09:25:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:38,135 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 3801 transitions. [2022-12-14 09:25:38,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 3801 transitions. [2022-12-14 09:25:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 09:25:38,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:38,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 09:25:38,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:25:38,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:38,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:38,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:38,337 INFO L85 PathProgramCache]: Analyzing trace with hash 726826619, now seen corresponding path program 1 times [2022-12-14 09:25:38,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:38,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539760132] [2022-12-14 09:25:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:38,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:38,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:38,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539760132] [2022-12-14 09:25:38,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539760132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:38,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:38,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:25:38,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897688593] [2022-12-14 09:25:38,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:38,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:25:38,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:38,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:25:38,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:25:38,440 INFO L87 Difference]: Start difference. First operand 1145 states and 3801 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2022-12-14 09:25:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:38,544 INFO L93 Difference]: Finished difference Result 1212 states and 3955 transitions. [2022-12-14 09:25:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:25:38,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 09:25:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:38,552 INFO L225 Difference]: With dead ends: 1212 [2022-12-14 09:25:38,552 INFO L226 Difference]: Without dead ends: 1204 [2022-12-14 09:25:38,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:25:38,553 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:38,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 9 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-12-14 09:25:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1203. [2022-12-14 09:25:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1055 states have (on average 3.7298578199052135) internal successors, (3935), 1202 states have internal predecessors, (3935), 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) [2022-12-14 09:25:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3935 transitions. [2022-12-14 09:25:38,589 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 3935 transitions. Word has length 6 [2022-12-14 09:25:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:38,589 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 3935 transitions. [2022-12-14 09:25:38,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2022-12-14 09:25:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 3935 transitions. [2022-12-14 09:25:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 09:25:38,589 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:38,589 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-12-14 09:25:38,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 09:25:38,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:38,590 INFO L85 PathProgramCache]: Analyzing trace with hash 714788755, now seen corresponding path program 2 times [2022-12-14 09:25:38,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:38,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118251507] [2022-12-14 09:25:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:38,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:38,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:38,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118251507] [2022-12-14 09:25:38,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118251507] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:38,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831891910] [2022-12-14 09:25:38,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:25:38,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:38,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:38,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:38,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:25:38,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 09:25:38,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:25:38,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:25:38,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 09:25:38,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:25:38,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831891910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:38,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:25:38,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-14 09:25:38,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265691851] [2022-12-14 09:25:38,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:38,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:38,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:38,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:38,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 09:25:38,756 INFO L87 Difference]: Start difference. First operand 1203 states and 3935 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) [2022-12-14 09:25:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:38,809 INFO L93 Difference]: Finished difference Result 1201 states and 3932 transitions. [2022-12-14 09:25:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:38,809 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 6 [2022-12-14 09:25:38,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:38,814 INFO L225 Difference]: With dead ends: 1201 [2022-12-14 09:25:38,814 INFO L226 Difference]: Without dead ends: 1201 [2022-12-14 09:25:38,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 09:25:38,815 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:38,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:25:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-12-14 09:25:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1190. [2022-12-14 09:25:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1044 states have (on average 3.7452107279693485) internal successors, (3910), 1189 states have internal predecessors, (3910), 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) [2022-12-14 09:25:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 3910 transitions. [2022-12-14 09:25:38,840 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 3910 transitions. Word has length 6 [2022-12-14 09:25:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:38,841 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 3910 transitions. [2022-12-14 09:25:38,841 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) [2022-12-14 09:25:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 3910 transitions. [2022-12-14 09:25:38,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 09:25:38,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:38,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:38,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:25:39,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:39,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:39,042 INFO L85 PathProgramCache]: Analyzing trace with hash 695654953, now seen corresponding path program 1 times [2022-12-14 09:25:39,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:39,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399076851] [2022-12-14 09:25:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:39,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:39,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399076851] [2022-12-14 09:25:39,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399076851] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:39,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105409831] [2022-12-14 09:25:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:39,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:39,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:39,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:39,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:25:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:39,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:25:39,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:39,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:25:39,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105409831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:39,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:25:39,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-14 09:25:39,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186488537] [2022-12-14 09:25:39,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:39,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:39,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:39,235 INFO L87 Difference]: Start difference. First operand 1190 states and 3910 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-12-14 09:25:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:39,286 INFO L93 Difference]: Finished difference Result 824 states and 2666 transitions. [2022-12-14 09:25:39,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:39,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 09:25:39,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:39,293 INFO L225 Difference]: With dead ends: 824 [2022-12-14 09:25:39,293 INFO L226 Difference]: Without dead ends: 824 [2022-12-14 09:25:39,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:39,293 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:39,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:25:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-12-14 09:25:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2022-12-14 09:25:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 746 states have (on average 3.5737265415549597) internal successors, (2666), 823 states have internal predecessors, (2666), 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) [2022-12-14 09:25:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 2666 transitions. [2022-12-14 09:25:39,319 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 2666 transitions. Word has length 7 [2022-12-14 09:25:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:39,320 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 2666 transitions. [2022-12-14 09:25:39,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-12-14 09:25:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 2666 transitions. [2022-12-14 09:25:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 09:25:39,320 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:39,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:39,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 09:25:39,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 09:25:39,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:39,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:39,521 INFO L85 PathProgramCache]: Analyzing trace with hash 695655082, now seen corresponding path program 1 times [2022-12-14 09:25:39,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:39,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409748883] [2022-12-14 09:25:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:39,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:39,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:39,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409748883] [2022-12-14 09:25:39,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409748883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:39,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:39,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:25:39,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709976341] [2022-12-14 09:25:39,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:39,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:39,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:39,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:39,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:25:39,570 INFO L87 Difference]: Start difference. First operand 824 states and 2666 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:39,647 INFO L93 Difference]: Finished difference Result 1205 states and 3891 transitions. [2022-12-14 09:25:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:39,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 09:25:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:39,655 INFO L225 Difference]: With dead ends: 1205 [2022-12-14 09:25:39,656 INFO L226 Difference]: Without dead ends: 1205 [2022-12-14 09:25:39,656 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 [2022-12-14 09:25:39,656 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:39,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 7 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:39,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2022-12-14 09:25:39,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 952. [2022-12-14 09:25:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 874 states have (on average 3.6956521739130435) internal successors, (3230), 951 states have internal predecessors, (3230), 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) [2022-12-14 09:25:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 3230 transitions. [2022-12-14 09:25:39,678 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 3230 transitions. Word has length 7 [2022-12-14 09:25:39,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:39,678 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 3230 transitions. [2022-12-14 09:25:39,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 3230 transitions. [2022-12-14 09:25:39,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 09:25:39,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:39,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:39,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 09:25:39,679 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:39,679 INFO L85 PathProgramCache]: Analyzing trace with hash 90473764, now seen corresponding path program 1 times [2022-12-14 09:25:39,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:39,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266358661] [2022-12-14 09:25:39,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:39,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:39,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:39,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266358661] [2022-12-14 09:25:39,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266358661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:39,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:39,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:25:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886988843] [2022-12-14 09:25:39,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:39,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:39,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:39,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:25:39,731 INFO L87 Difference]: Start difference. First operand 952 states and 3230 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:39,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:39,804 INFO L93 Difference]: Finished difference Result 824 states and 2794 transitions. [2022-12-14 09:25:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:39,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 09:25:39,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:39,812 INFO L225 Difference]: With dead ends: 824 [2022-12-14 09:25:39,812 INFO L226 Difference]: Without dead ends: 824 [2022-12-14 09:25:39,812 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 [2022-12-14 09:25:39,813 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:39,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 7 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:39,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-12-14 09:25:39,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2022-12-14 09:25:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 770 states have (on average 3.6285714285714286) internal successors, (2794), 823 states have internal predecessors, (2794), 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) [2022-12-14 09:25:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 2794 transitions. [2022-12-14 09:25:39,828 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 2794 transitions. Word has length 8 [2022-12-14 09:25:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:39,829 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 2794 transitions. [2022-12-14 09:25:39,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 2794 transitions. [2022-12-14 09:25:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 09:25:39,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:39,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:39,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 09:25:39,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:39,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:39,830 INFO L85 PathProgramCache]: Analyzing trace with hash 90473790, now seen corresponding path program 1 times [2022-12-14 09:25:39,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:39,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863749344] [2022-12-14 09:25:39,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:39,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:39,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:39,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863749344] [2022-12-14 09:25:39,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863749344] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:39,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423345764] [2022-12-14 09:25:39,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:39,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:39,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:39,872 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:39,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 09:25:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:39,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 09:25:39,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:39,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:40,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423345764] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:25:40,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [26347269] [2022-12-14 09:25:40,036 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:337) 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) [2022-12-14 09:25:40,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:25:40,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 10 [2022-12-14 09:25:40,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833617503] [2022-12-14 09:25:40,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:25:40,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 09:25:40,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:40,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 09:25:40,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-14 09:25:40,038 INFO L87 Difference]: Start difference. First operand 824 states and 2794 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 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) [2022-12-14 09:25:40,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:40,510 INFO L93 Difference]: Finished difference Result 2234 states and 6790 transitions. [2022-12-14 09:25:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 09:25:40,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 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 8 [2022-12-14 09:25:40,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:40,519 INFO L225 Difference]: With dead ends: 2234 [2022-12-14 09:25:40,519 INFO L226 Difference]: Without dead ends: 2228 [2022-12-14 09:25:40,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-14 09:25:40,519 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 460 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:40,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 51 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:25:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2022-12-14 09:25:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1251. [2022-12-14 09:25:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1174 states have (on average 3.6396933560477) internal successors, (4273), 1250 states have internal predecessors, (4273), 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) [2022-12-14 09:25:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 4273 transitions. [2022-12-14 09:25:40,548 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 4273 transitions. Word has length 8 [2022-12-14 09:25:40,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:40,548 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 4273 transitions. [2022-12-14 09:25:40,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 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) [2022-12-14 09:25:40,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 4273 transitions. [2022-12-14 09:25:40,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:25:40,549 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:40,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:40,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 09:25:40,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 09:25:40,750 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:40,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:40,751 INFO L85 PathProgramCache]: Analyzing trace with hash -705649928, now seen corresponding path program 1 times [2022-12-14 09:25:40,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:40,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791792205] [2022-12-14 09:25:40,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:40,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:40,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:40,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791792205] [2022-12-14 09:25:40,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791792205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:40,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:40,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:25:40,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337120684] [2022-12-14 09:25:40,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:40,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:25:40,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:40,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:25:40,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:25:40,877 INFO L87 Difference]: Start difference. First operand 1251 states and 4273 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-12-14 09:25:40,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:40,964 INFO L93 Difference]: Finished difference Result 1385 states and 4763 transitions. [2022-12-14 09:25:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:40,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 10 [2022-12-14 09:25:40,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:40,971 INFO L225 Difference]: With dead ends: 1385 [2022-12-14 09:25:40,971 INFO L226 Difference]: Without dead ends: 1355 [2022-12-14 09:25:40,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:25:40,971 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:40,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 5 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2022-12-14 09:25:40,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1355. [2022-12-14 09:25:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1272 states have (on average 3.6988993710691824) internal successors, (4705), 1354 states have internal predecessors, (4705), 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) [2022-12-14 09:25:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 4705 transitions. [2022-12-14 09:25:41,006 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 4705 transitions. Word has length 10 [2022-12-14 09:25:41,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:41,006 INFO L495 AbstractCegarLoop]: Abstraction has 1355 states and 4705 transitions. [2022-12-14 09:25:41,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-12-14 09:25:41,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 4705 transitions. [2022-12-14 09:25:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:25:41,007 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:41,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:41,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 09:25:41,007 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:41,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1271579259, now seen corresponding path program 1 times [2022-12-14 09:25:41,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:41,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224762067] [2022-12-14 09:25:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:41,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:41,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:41,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224762067] [2022-12-14 09:25:41,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224762067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:41,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:41,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:25:41,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297287729] [2022-12-14 09:25:41,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:41,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:41,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:41,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:41,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:25:41,081 INFO L87 Difference]: Start difference. First operand 1355 states and 4705 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2022-12-14 09:25:41,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:41,138 INFO L93 Difference]: Finished difference Result 949 states and 3130 transitions. [2022-12-14 09:25:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 10 [2022-12-14 09:25:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:41,142 INFO L225 Difference]: With dead ends: 949 [2022-12-14 09:25:41,142 INFO L226 Difference]: Without dead ends: 949 [2022-12-14 09:25:41,142 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 [2022-12-14 09:25:41,143 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:41,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-12-14 09:25:41,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 949. [2022-12-14 09:25:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 866 states have (on average 3.6143187066974596) internal successors, (3130), 948 states have internal predecessors, (3130), 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) [2022-12-14 09:25:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 3130 transitions. [2022-12-14 09:25:41,165 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 3130 transitions. Word has length 10 [2022-12-14 09:25:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:41,165 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 3130 transitions. [2022-12-14 09:25:41,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2022-12-14 09:25:41,165 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 3130 transitions. [2022-12-14 09:25:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:25:41,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:41,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:41,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 09:25:41,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:41,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:41,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1882523542, now seen corresponding path program 2 times [2022-12-14 09:25:41,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:41,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863859698] [2022-12-14 09:25:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:41,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 09:25:41,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:41,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863859698] [2022-12-14 09:25:41,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863859698] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:41,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642162922] [2022-12-14 09:25:41,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:25:41,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:41,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:41,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:41,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 09:25:41,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 09:25:41,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:25:41,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 09:25:41,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 09:25:41,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:25:41,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642162922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:41,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:25:41,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 09:25:41,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203229053] [2022-12-14 09:25:41,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:41,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:41,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:41,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:41,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:41,295 INFO L87 Difference]: Start difference. First operand 949 states and 3130 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:41,324 INFO L93 Difference]: Finished difference Result 799 states and 2616 transitions. [2022-12-14 09:25:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 09:25:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:41,327 INFO L225 Difference]: With dead ends: 799 [2022-12-14 09:25:41,327 INFO L226 Difference]: Without dead ends: 799 [2022-12-14 09:25:41,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:41,327 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:41,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:25:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-12-14 09:25:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 649. [2022-12-14 09:25:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 593 states have (on average 3.2917369308600337) internal successors, (1952), 648 states have internal predecessors, (1952), 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) [2022-12-14 09:25:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1952 transitions. [2022-12-14 09:25:41,338 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1952 transitions. Word has length 10 [2022-12-14 09:25:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:41,339 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1952 transitions. [2022-12-14 09:25:41,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1952 transitions. [2022-12-14 09:25:41,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 09:25:41,339 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:41,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:41,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 09:25:41,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:41,540 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:41,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2093507606, now seen corresponding path program 1 times [2022-12-14 09:25:41,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:41,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861677490] [2022-12-14 09:25:41,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:41,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:41,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:41,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861677490] [2022-12-14 09:25:41,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861677490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:41,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:41,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:25:41,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143165879] [2022-12-14 09:25:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:41,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:25:41,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:41,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:25:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:25:41,629 INFO L87 Difference]: Start difference. First operand 649 states and 1952 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:41,710 INFO L93 Difference]: Finished difference Result 781 states and 2284 transitions. [2022-12-14 09:25:41,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:25:41,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 09:25:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:41,712 INFO L225 Difference]: With dead ends: 781 [2022-12-14 09:25:41,713 INFO L226 Difference]: Without dead ends: 651 [2022-12-14 09:25:41,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:25:41,713 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:41,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 9 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-12-14 09:25:41,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2022-12-14 09:25:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 595 states have (on average 3.284033613445378) internal successors, (1954), 650 states have internal predecessors, (1954), 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) [2022-12-14 09:25:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1954 transitions. [2022-12-14 09:25:41,728 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1954 transitions. Word has length 12 [2022-12-14 09:25:41,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:41,728 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1954 transitions. [2022-12-14 09:25:41,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:41,729 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1954 transitions. [2022-12-14 09:25:41,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:25:41,729 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:41,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:41,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 09:25:41,730 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:41,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:41,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1855866443, now seen corresponding path program 1 times [2022-12-14 09:25:41,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:41,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799541380] [2022-12-14 09:25:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:41,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:41,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:41,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799541380] [2022-12-14 09:25:41,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799541380] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:41,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674522348] [2022-12-14 09:25:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:41,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:41,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:41,995 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:41,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 09:25:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:42,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 09:25:42,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:42,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-14 09:25:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:42,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:42,256 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-14 09:25:42,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2022-12-14 09:25:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:42,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674522348] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:25:42,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [421388449] [2022-12-14 09:25:42,360 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:337) 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) [2022-12-14 09:25:42,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:25:42,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-14 09:25:42,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198874304] [2022-12-14 09:25:42,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:25:42,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 09:25:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:42,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 09:25:42,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-12-14 09:25:42,362 INFO L87 Difference]: Start difference. First operand 651 states and 1954 transitions. Second operand has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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) [2022-12-14 09:25:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:42,934 INFO L93 Difference]: Finished difference Result 1143 states and 3266 transitions. [2022-12-14 09:25:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 09:25:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:25:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:42,937 INFO L225 Difference]: With dead ends: 1143 [2022-12-14 09:25:42,937 INFO L226 Difference]: Without dead ends: 1143 [2022-12-14 09:25:42,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2022-12-14 09:25:42,938 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 285 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:42,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 65 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:25:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-12-14 09:25:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 751. [2022-12-14 09:25:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 695 states have (on average 3.366906474820144) internal successors, (2340), 750 states have internal predecessors, (2340), 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) [2022-12-14 09:25:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2340 transitions. [2022-12-14 09:25:42,951 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2340 transitions. Word has length 13 [2022-12-14 09:25:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:42,952 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 2340 transitions. [2022-12-14 09:25:42,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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) [2022-12-14 09:25:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2340 transitions. [2022-12-14 09:25:42,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:25:42,952 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:42,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:42,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 09:25:43,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:43,153 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:43,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:43,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1855866446, now seen corresponding path program 1 times [2022-12-14 09:25:43,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:43,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025914257] [2022-12-14 09:25:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:43,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:43,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:43,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025914257] [2022-12-14 09:25:43,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025914257] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:43,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349479490] [2022-12-14 09:25:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:43,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:43,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:43,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:43,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 09:25:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:43,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 09:25:43,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 09:25:43,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:25:43,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349479490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:43,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:25:43,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 09:25:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884359641] [2022-12-14 09:25:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:43,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:43,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:43,348 INFO L87 Difference]: Start difference. First operand 751 states and 2340 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-14 09:25:43,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:43,387 INFO L93 Difference]: Finished difference Result 617 states and 1905 transitions. [2022-12-14 09:25:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:43,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:25:43,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:43,390 INFO L225 Difference]: With dead ends: 617 [2022-12-14 09:25:43,390 INFO L226 Difference]: Without dead ends: 617 [2022-12-14 09:25:43,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:43,390 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:43,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:25:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-12-14 09:25:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2022-12-14 09:25:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 581 states have (on average 3.278829604130809) internal successors, (1905), 616 states have internal predecessors, (1905), 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) [2022-12-14 09:25:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1905 transitions. [2022-12-14 09:25:43,399 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1905 transitions. Word has length 13 [2022-12-14 09:25:43,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:43,399 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 1905 transitions. [2022-12-14 09:25:43,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-14 09:25:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1905 transitions. [2022-12-14 09:25:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:25:43,400 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:43,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:43,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 09:25:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 09:25:43,601 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:43,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1855866659, now seen corresponding path program 1 times [2022-12-14 09:25:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:43,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116475125] [2022-12-14 09:25:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:43,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:43,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:43,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116475125] [2022-12-14 09:25:43,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116475125] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:43,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876208789] [2022-12-14 09:25:43,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:43,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:43,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:43,867 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:43,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 09:25:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:43,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 09:25:43,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:44,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 09:25:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:44,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:44,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:25:44,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-12-14 09:25:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:44,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876208789] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:25:44,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493856328] [2022-12-14 09:25:44,294 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:337) 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) [2022-12-14 09:25:44,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:25:44,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-14 09:25:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579020242] [2022-12-14 09:25:44,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:25:44,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 09:25:44,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 09:25:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-12-14 09:25:44,296 INFO L87 Difference]: Start difference. First operand 617 states and 1905 transitions. Second operand has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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) [2022-12-14 09:25:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:44,751 INFO L93 Difference]: Finished difference Result 998 states and 2733 transitions. [2022-12-14 09:25:44,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 09:25:44,752 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:25:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:44,754 INFO L225 Difference]: With dead ends: 998 [2022-12-14 09:25:44,754 INFO L226 Difference]: Without dead ends: 998 [2022-12-14 09:25:44,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2022-12-14 09:25:44,754 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 261 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:44,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 52 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:25:44,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-12-14 09:25:44,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 680. [2022-12-14 09:25:44,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 644 states have (on average 3.2080745341614905) internal successors, (2066), 679 states have internal predecessors, (2066), 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) [2022-12-14 09:25:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 2066 transitions. [2022-12-14 09:25:44,765 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 2066 transitions. Word has length 13 [2022-12-14 09:25:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:44,765 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 2066 transitions. [2022-12-14 09:25:44,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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) [2022-12-14 09:25:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 2066 transitions. [2022-12-14 09:25:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:25:44,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:44,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:44,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 09:25:44,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:44,966 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:44,967 INFO L85 PathProgramCache]: Analyzing trace with hash -693706037, now seen corresponding path program 2 times [2022-12-14 09:25:44,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:44,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552603366] [2022-12-14 09:25:44,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:44,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:45,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:45,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552603366] [2022-12-14 09:25:45,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552603366] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:45,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226716178] [2022-12-14 09:25:45,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:25:45,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:45,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:45,308 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:45,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 09:25:45,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 09:25:45,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:25:45,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 09:25:45,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:45,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:45,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 09:25:45,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-14 09:25:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 09:25:45,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:25:45,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226716178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:45,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:25:45,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2022-12-14 09:25:45,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86692371] [2022-12-14 09:25:45,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:45,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 09:25:45,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:45,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 09:25:45,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-14 09:25:45,523 INFO L87 Difference]: Start difference. First operand 680 states and 2066 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-12-14 09:25:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:45,651 INFO L93 Difference]: Finished difference Result 784 states and 2316 transitions. [2022-12-14 09:25:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:25:45,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:25:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:45,654 INFO L225 Difference]: With dead ends: 784 [2022-12-14 09:25:45,654 INFO L226 Difference]: Without dead ends: 784 [2022-12-14 09:25:45,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-12-14 09:25:45,654 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:45,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 22 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:45,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-12-14 09:25:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 690. [2022-12-14 09:25:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 654 states have (on average 3.2308868501529053) internal successors, (2113), 689 states have internal predecessors, (2113), 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) [2022-12-14 09:25:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2113 transitions. [2022-12-14 09:25:45,665 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2113 transitions. Word has length 13 [2022-12-14 09:25:45,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:45,665 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 2113 transitions. [2022-12-14 09:25:45,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-12-14 09:25:45,665 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2113 transitions. [2022-12-14 09:25:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:25:45,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:45,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:45,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 09:25:45,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:45,866 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:45,866 INFO L85 PathProgramCache]: Analyzing trace with hash -693706036, now seen corresponding path program 1 times [2022-12-14 09:25:45,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:45,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234363770] [2022-12-14 09:25:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:45,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:46,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:46,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234363770] [2022-12-14 09:25:46,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234363770] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:46,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740237091] [2022-12-14 09:25:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:46,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:46,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:46,172 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:46,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 09:25:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:46,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 09:25:46,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:46,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:46,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:46,308 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-12-14 09:25:46,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-12-14 09:25:46,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:25:46,406 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 09:25:46,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 09:25:46,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 09:25:46,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:46,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 09:25:46,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:46,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 09:25:46,676 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-14 09:25:46,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-14 09:25:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:46,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:46,741 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_616 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_616) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483649)) is different from false [2022-12-14 09:25:46,969 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:25:46,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-12-14 09:25:46,985 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:25:46,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1233 treesize of output 1173 [2022-12-14 09:25:47,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1158 treesize of output 966 [2022-12-14 09:25:47,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 483 treesize of output 435 [2022-12-14 09:25:47,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 918 treesize of output 822 [2022-12-14 09:25:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:48,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740237091] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:25:48,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1487112523] [2022-12-14 09:25:48,270 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:337) 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) [2022-12-14 09:25:48,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:25:48,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2022-12-14 09:25:48,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255607630] [2022-12-14 09:25:48,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:25:48,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 09:25:48,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:48,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 09:25:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=4, NotChecked=42, Total=552 [2022-12-14 09:25:48,272 INFO L87 Difference]: Start difference. First operand 690 states and 2113 transitions. Second operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 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) [2022-12-14 09:25:51,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:51,229 INFO L93 Difference]: Finished difference Result 1194 states and 3275 transitions. [2022-12-14 09:25:51,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 09:25:51,230 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:25:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:51,232 INFO L225 Difference]: With dead ends: 1194 [2022-12-14 09:25:51,232 INFO L226 Difference]: Without dead ends: 1194 [2022-12-14 09:25:51,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=254, Invalid=1371, Unknown=19, NotChecked=78, Total=1722 [2022-12-14 09:25:51,233 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 528 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 74 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:51,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 135 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1130 Invalid, 33 Unknown, 118 Unchecked, 1.1s Time] [2022-12-14 09:25:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-12-14 09:25:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 714. [2022-12-14 09:25:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 678 states have (on average 3.2227138643067845) internal successors, (2185), 713 states have internal predecessors, (2185), 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) [2022-12-14 09:25:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 2185 transitions. [2022-12-14 09:25:51,248 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 2185 transitions. Word has length 13 [2022-12-14 09:25:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:51,249 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 2185 transitions. [2022-12-14 09:25:51,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 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) [2022-12-14 09:25:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 2185 transitions. [2022-12-14 09:25:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:25:51,249 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:51,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:51,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 09:25:51,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 09:25:51,451 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:51,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash -693705821, now seen corresponding path program 2 times [2022-12-14 09:25:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:51,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572519228] [2022-12-14 09:25:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:51,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:52,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:52,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572519228] [2022-12-14 09:25:52,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572519228] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:52,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231520593] [2022-12-14 09:25:52,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:25:52,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:52,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:52,047 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:52,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 09:25:52,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 09:25:52,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:25:52,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 09:25:52,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:52,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:52,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 09:25:52,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-14 09:25:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 09:25:52,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:25:52,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231520593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:52,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:25:52,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2022-12-14 09:25:52,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982876387] [2022-12-14 09:25:52,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:52,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 09:25:52,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:52,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 09:25:52,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-14 09:25:52,256 INFO L87 Difference]: Start difference. First operand 714 states and 2185 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-12-14 09:25:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:52,407 INFO L93 Difference]: Finished difference Result 786 states and 2271 transitions. [2022-12-14 09:25:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:25:52,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:25:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:52,410 INFO L225 Difference]: With dead ends: 786 [2022-12-14 09:25:52,410 INFO L226 Difference]: Without dead ends: 786 [2022-12-14 09:25:52,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-12-14 09:25:52,411 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 38 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:52,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 22 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-12-14 09:25:52,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 681. [2022-12-14 09:25:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 645 states have (on average 3.192248062015504) internal successors, (2059), 680 states have internal predecessors, (2059), 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) [2022-12-14 09:25:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 2059 transitions. [2022-12-14 09:25:52,423 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 2059 transitions. Word has length 13 [2022-12-14 09:25:52,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:52,423 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 2059 transitions. [2022-12-14 09:25:52,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-12-14 09:25:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 2059 transitions. [2022-12-14 09:25:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:25:52,424 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:52,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:52,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 09:25:52,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:52,625 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash -178381319, now seen corresponding path program 1 times [2022-12-14 09:25:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:52,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382022646] [2022-12-14 09:25:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:52,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:52,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:52,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:52,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382022646] [2022-12-14 09:25:52,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382022646] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:52,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389293835] [2022-12-14 09:25:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:52,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:52,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:52,909 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:52,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 09:25:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:52,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 09:25:53,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:53,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:53,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 09:25:53,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-14 09:25:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:53,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:53,208 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:25:53,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2022-12-14 09:25:53,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-12-14 09:25:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:53,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389293835] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:25:53,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1313422153] [2022-12-14 09:25:53,335 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:337) 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) [2022-12-14 09:25:53,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:25:53,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-14 09:25:53,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166167407] [2022-12-14 09:25:53,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:25:53,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 09:25:53,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 09:25:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=318, Unknown=2, NotChecked=0, Total=380 [2022-12-14 09:25:53,336 INFO L87 Difference]: Start difference. First operand 681 states and 2059 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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) [2022-12-14 09:25:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:54,596 INFO L93 Difference]: Finished difference Result 1520 states and 4267 transitions. [2022-12-14 09:25:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 09:25:54,596 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:25:54,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:54,599 INFO L225 Difference]: With dead ends: 1520 [2022-12-14 09:25:54,599 INFO L226 Difference]: Without dead ends: 1520 [2022-12-14 09:25:54,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=1101, Unknown=6, NotChecked=0, Total=1332 [2022-12-14 09:25:54,600 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 338 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 50 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:54,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 106 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 957 Invalid, 22 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 09:25:54,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-12-14 09:25:54,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 701. [2022-12-14 09:25:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 665 states have (on average 3.1353383458646618) internal successors, (2085), 700 states have internal predecessors, (2085), 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) [2022-12-14 09:25:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 2085 transitions. [2022-12-14 09:25:54,613 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 2085 transitions. Word has length 13 [2022-12-14 09:25:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:54,613 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 2085 transitions. [2022-12-14 09:25:54,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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) [2022-12-14 09:25:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 2085 transitions. [2022-12-14 09:25:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:25:54,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:54,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:54,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 09:25:54,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:54,814 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash -178381103, now seen corresponding path program 1 times [2022-12-14 09:25:54,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:54,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970397868] [2022-12-14 09:25:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:54,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:55,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:55,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970397868] [2022-12-14 09:25:55,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970397868] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:55,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393776992] [2022-12-14 09:25:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:55,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:55,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:55,119 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:55,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 09:25:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:55,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 09:25:55,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:55,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:55,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 09:25:55,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-14 09:25:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 09:25:55,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:25:55,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393776992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:55,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:25:55,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2022-12-14 09:25:55,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399145770] [2022-12-14 09:25:55,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:55,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 09:25:55,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:55,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 09:25:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-14 09:25:55,337 INFO L87 Difference]: Start difference. First operand 701 states and 2085 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-12-14 09:25:55,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:55,511 INFO L93 Difference]: Finished difference Result 818 states and 2340 transitions. [2022-12-14 09:25:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:25:55,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:25:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:55,513 INFO L225 Difference]: With dead ends: 818 [2022-12-14 09:25:55,513 INFO L226 Difference]: Without dead ends: 818 [2022-12-14 09:25:55,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-12-14 09:25:55,514 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:55,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 28 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:25:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-12-14 09:25:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 704. [2022-12-14 09:25:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 668 states have (on average 3.1497005988023954) internal successors, (2104), 703 states have internal predecessors, (2104), 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) [2022-12-14 09:25:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 2104 transitions. [2022-12-14 09:25:55,527 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 2104 transitions. Word has length 13 [2022-12-14 09:25:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:55,527 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 2104 transitions. [2022-12-14 09:25:55,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-12-14 09:25:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 2104 transitions. [2022-12-14 09:25:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 09:25:55,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:55,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:55,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 09:25:55,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 09:25:55,730 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-12-14 09:25:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:55,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1704977329, now seen corresponding path program 1 times [2022-12-14 09:25:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:55,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117012471] [2022-12-14 09:25:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:55,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:25:56,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:56,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117012471] [2022-12-14 09:25:56,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117012471] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:56,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142249052] [2022-12-14 09:25:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:56,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:56,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:56,028 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:56,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25533c5-233d-4b88-8c08-0c253ef32a7f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 09:25:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:56,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 09:25:56,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:56,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:56,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:56,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:56,158 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 09:25:56,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-12-14 09:25:56,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:25:56,238 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 09:25:56,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 09:25:56,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:25:56,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:25:56,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:25:56,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:56,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 09:25:56,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-14 09:25:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:56,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:56,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:25:56,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 59 [2022-12-14 09:25:56,762 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:25:56,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11444 treesize of output 11168 [2022-12-14 09:25:56,824 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:25:56,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11156 treesize of output 10952 [2022-12-14 09:25:56,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10358 treesize of output 8822 [2022-12-14 09:25:56,934 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:25:56,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9404 treesize of output 8984 [2022-12-14 09:25:56,987 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:25:56,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8972 treesize of output 8120