./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur --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 c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- 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-38b53e6 [2022-11-25 23:52:10,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:52:10,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:52:10,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:52:10,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:52:10,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:52:10,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:52:10,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:52:10,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:52:10,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:52:10,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:52:10,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:52:10,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:52:10,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:52:10,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:52:10,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:52:10,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:52:10,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:52:10,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:52:10,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:52:10,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:52:10,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:52:10,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:52:10,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:52:10,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:52:10,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:52:10,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:52:10,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:52:10,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:52:10,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:52:10,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:52:10,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:52:10,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:52:10,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:52:10,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:52:10,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:52:10,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:52:10,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:52:10,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:52:10,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:52:10,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:52:10,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:52:10,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:52:10,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:52:10,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:52:10,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:52:10,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:52:10,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:52:10,714 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:52:10,714 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:52:10,715 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:52:10,715 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:52:10,715 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:52:10,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:52:10,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:52:10,716 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:52:10,716 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:52:10,717 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:52:10,717 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:52:10,717 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:52:10,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:52:10,718 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:52:10,719 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:52:10,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:52:10,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:52:10,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:52:10,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:52:10,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:52:10,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:52:10,721 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:52:10,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:52:10,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:52:10,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:52:10,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:52:10,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:52:10,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:52:10,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:52:10,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:52:10,723 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:52:10,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:52:10,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:52:10,724 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:52:10,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:52:10,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:52:10,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:52:10,725 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_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-11-25 23:52:11,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:52:11,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:52:11,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:52:11,078 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:52:11,078 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:52:11,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-25 23:52:14,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:52:14,345 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:52:14,346 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-25 23:52:14,354 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/data/cc8b5af26/f4e978b8f31440f6b4713372f86a7c98/FLAGbfbca274a [2022-11-25 23:52:14,705 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/data/cc8b5af26/f4e978b8f31440f6b4713372f86a7c98 [2022-11-25 23:52:14,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:52:14,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:52:14,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:52:14,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:52:14,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:52:14,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:52:14" (1/1) ... [2022-11-25 23:52:14,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eab0c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:14, skipping insertion in model container [2022-11-25 23:52:14,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:52:14" (1/1) ... [2022-11-25 23:52:14,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:52:14,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:52:14,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:14,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:14,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:14,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:14,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:14,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:14,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:14,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:14,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:14,996 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:14,998 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,029 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_ca4cedbe-d83a-41a3-9562-769d41816aad/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-25 23:52:15,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:52:15,066 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:52:15,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,089 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,093 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:52:15,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:52:15,144 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_ca4cedbe-d83a-41a3-9562-769d41816aad/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-25 23:52:15,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:52:15,178 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:52:15,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15 WrapperNode [2022-11-25 23:52:15,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:52:15,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:52:15,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:52:15,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:52:15,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,244 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 482 [2022-11-25 23:52:15,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:52:15,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:52:15,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:52:15,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:52:15,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,282 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:52:15,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:52:15,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:52:15,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:52:15,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (1/1) ... [2022-11-25 23:52:15,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:52:15,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:52:15,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:52:15,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:52:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:52:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:52:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:52:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:52:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 23:52:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 23:52:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 23:52:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 23:52:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 23:52:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 23:52:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 23:52:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 23:52:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:52:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-25 23:52:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-25 23:52:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-25 23:52:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-25 23:52:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 23:52:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 23:52:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:52:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:52:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:52:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:52:15,400 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:52:15,607 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:52:15,613 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:52:16,396 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:52:17,148 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:52:17,149 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 23:52:17,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:52:17 BoogieIcfgContainer [2022-11-25 23:52:17,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:52:17,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:52:17,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:52:17,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:52:17,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:52:14" (1/3) ... [2022-11-25 23:52:17,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b87e404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:52:17, skipping insertion in model container [2022-11-25 23:52:17,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:15" (2/3) ... [2022-11-25 23:52:17,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b87e404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:52:17, skipping insertion in model container [2022-11-25 23:52:17,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:52:17" (3/3) ... [2022-11-25 23:52:17,169 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-11-25 23:52:17,179 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:52:17,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:52:17,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2022-11-25 23:52:17,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:52:17,538 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-25 23:52:17,590 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:52:17,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 370 places, 374 transitions, 820 flow [2022-11-25 23:52:17,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 370 places, 374 transitions, 820 flow [2022-11-25 23:52:17,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 374 transitions, 820 flow [2022-11-25 23:52:17,814 INFO L130 PetriNetUnfolder]: 21/316 cut-off events. [2022-11-25 23:52:17,815 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 23:52:17,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 316 events. 21/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 558 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 263. Up to 3 conditions per place. [2022-11-25 23:52:17,833 INFO L119 LiptonReduction]: Number of co-enabled transitions 16412 [2022-11-25 23:53:00,613 INFO L134 LiptonReduction]: Checked pairs total: 62738 [2022-11-25 23:53:00,613 INFO L136 LiptonReduction]: Total number of compositions: 373 [2022-11-25 23:53:00,622 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 147 places, 137 transitions, 346 flow [2022-11-25 23:53:08,374 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 165303 states, 157731 states have (on average 5.392357875116496) internal successors, (850542), 165302 states have internal predecessors, (850542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:53:08,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:53:08,408 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;@19eaf1b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:53:08,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2022-11-25 23:53:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 165303 states, 157731 states have (on average 5.392357875116496) internal successors, (850542), 165302 states have internal predecessors, (850542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:53:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-25 23:53:08,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:08,651 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-25 23:53:08,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-25 23:53:08,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2192, now seen corresponding path program 1 times [2022-11-25 23:53:08,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:08,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413387510] [2022-11-25 23:53:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:08,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:53:08,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:08,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413387510] [2022-11-25 23:53:08,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413387510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:08,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:08,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 23:53:08,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191142642] [2022-11-25 23:53:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:08,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:53:08,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:08,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:53:08,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:53:09,100 INFO L87 Difference]: Start difference. First operand has 165303 states, 157731 states have (on average 5.392357875116496) internal successors, (850542), 165302 states have internal predecessors, (850542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:53:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:12,014 INFO L93 Difference]: Finished difference Result 79589 states and 403460 transitions. [2022-11-25 23:53:12,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:53:12,033 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-25 23:53:12,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:13,040 INFO L225 Difference]: With dead ends: 79589 [2022-11-25 23:53:13,040 INFO L226 Difference]: Without dead ends: 79589 [2022-11-25 23:53:13,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:53:13,048 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:13,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:53:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79589 states. [2022-11-25 23:53:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79589 to 79589. [2022-11-25 23:53:18,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79589 states, 76779 states have (on average 5.2548222821344375) internal successors, (403460), 79588 states have internal predecessors, (403460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:53:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79589 states to 79589 states and 403460 transitions. [2022-11-25 23:53:19,079 INFO L78 Accepts]: Start accepts. Automaton has 79589 states and 403460 transitions. Word has length 1 [2022-11-25 23:53:19,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:19,079 INFO L495 AbstractCegarLoop]: Abstraction has 79589 states and 403460 transitions. [2022-11-25 23:53:19,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:53:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 79589 states and 403460 transitions. [2022-11-25 23:53:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-25 23:53:19,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:19,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-25 23:53:19,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:53:19,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-25 23:53:19,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:19,081 INFO L85 PathProgramCache]: Analyzing trace with hash 70070, now seen corresponding path program 1 times [2022-11-25 23:53:19,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:19,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991709364] [2022-11-25 23:53:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:19,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:53:19,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:19,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991709364] [2022-11-25 23:53:19,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991709364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:19,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:19,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:53:19,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428114632] [2022-11-25 23:53:19,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:19,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:53:19,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:53:19,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:53:19,252 INFO L87 Difference]: Start difference. First operand 79589 states and 403460 transitions. 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) [2022-11-25 23:53:21,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:21,069 INFO L93 Difference]: Finished difference Result 79588 states and 403459 transitions. [2022-11-25 23:53:21,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:53:21,070 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 [2022-11-25 23:53:21,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:22,484 INFO L225 Difference]: With dead ends: 79588 [2022-11-25 23:53:22,485 INFO L226 Difference]: Without dead ends: 79588 [2022-11-25 23:53:22,485 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 [2022-11-25 23:53:22,486 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 90 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:22,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 22 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:53:22,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79588 states. [2022-11-25 23:53:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79588 to 79588. [2022-11-25 23:53:26,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79588 states, 76779 states have (on average 5.254809257739747) internal successors, (403459), 79587 states have internal predecessors, (403459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:53:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79588 states to 79588 states and 403459 transitions. [2022-11-25 23:53:26,757 INFO L78 Accepts]: Start accepts. Automaton has 79588 states and 403459 transitions. Word has length 2 [2022-11-25 23:53:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:26,757 INFO L495 AbstractCegarLoop]: Abstraction has 79588 states and 403459 transitions. [2022-11-25 23:53:26,758 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) [2022-11-25 23:53:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 79588 states and 403459 transitions. [2022-11-25 23:53:26,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-25 23:53:26,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:26,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-25 23:53:26,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:53:26,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-25 23:53:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash 70137, now seen corresponding path program 1 times [2022-11-25 23:53:26,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:26,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782342061] [2022-11-25 23:53:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:26,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:53:26,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:26,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782342061] [2022-11-25 23:53:26,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782342061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:26,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:53:26,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:53:26,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497173982] [2022-11-25 23:53:26,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:26,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:53:26,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:53:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:53:26,974 INFO L87 Difference]: Start difference. First operand 79588 states and 403459 transitions. 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) [2022-11-25 23:53:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:53:30,349 INFO L93 Difference]: Finished difference Result 159174 states and 806916 transitions. [2022-11-25 23:53:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:53:30,350 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 [2022-11-25 23:53:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:53:31,956 INFO L225 Difference]: With dead ends: 159174 [2022-11-25 23:53:31,956 INFO L226 Difference]: Without dead ends: 159174 [2022-11-25 23:53:31,957 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 [2022-11-25 23:53:31,958 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 89 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:53:31,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 44 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:53:32,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159174 states. [2022-11-25 23:53:36,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159174 to 79589. [2022-11-25 23:53:36,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79589 states, 76780 states have (on average 5.254766866371451) internal successors, (403461), 79588 states have internal predecessors, (403461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:53:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79589 states to 79589 states and 403461 transitions. [2022-11-25 23:53:37,998 INFO L78 Accepts]: Start accepts. Automaton has 79589 states and 403461 transitions. Word has length 2 [2022-11-25 23:53:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:53:37,998 INFO L495 AbstractCegarLoop]: Abstraction has 79589 states and 403461 transitions. [2022-11-25 23:53:37,998 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) [2022-11-25 23:53:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 79589 states and 403461 transitions. [2022-11-25 23:53:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:53:37,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:53:37,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:53:37,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:53:38,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-25 23:53:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:53:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2176401, now seen corresponding path program 1 times [2022-11-25 23:53:38,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:53:38,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695018476] [2022-11-25 23:53:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:38,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:53:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:53:38,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:53:38,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695018476] [2022-11-25 23:53:38,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695018476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:53:38,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647583148] [2022-11-25 23:53:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:53:38,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:53:38,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:53:38,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:53:38,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca4cedbe-d83a-41a3-9562-769d41816aad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:53:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:53:38,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:53:38,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:53:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:53:38,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:53:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:53:38,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647583148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:53:38,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [285456662] [2022-11-25 23:53:38,421 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) [2022-11-25 23:53:38,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:53:38,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-25 23:53:38,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383238951] [2022-11-25 23:53:38,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:53:38,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:53:38,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:53:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:53:38,447 INFO L87 Difference]: Start difference. First operand 79589 states and 403461 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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)