./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:56:34,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:56:34,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:56:34,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:56:34,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:56:34,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:56:34,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:56:34,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:56:34,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:56:34,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:56:34,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:56:34,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:56:34,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:56:34,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:56:34,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:56:34,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:56:34,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:56:34,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:56:34,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:56:34,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:56:34,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:56:34,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:56:34,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:56:34,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:56:34,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:56:34,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:56:34,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:56:34,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:56:34,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:56:34,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:56:34,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:56:34,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:56:34,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:56:34,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:56:34,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:56:34,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:56:34,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:56:34,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:56:34,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:56:34,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:56:34,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:56:34,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 13:56:34,642 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:56:34,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:56:34,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:56:34,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:56:34,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:56:34,645 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:56:34,645 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:56:34,646 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:56:34,646 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:56:34,646 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:56:34,647 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:56:34,648 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:56:34,648 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:56:34,648 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:56:34,649 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:56:34,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:56:34,649 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:56:34,650 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:56:34,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:56:34,651 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:56:34,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:56:34,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:56:34,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:56:34,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:56:34,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:56:34,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:56:34,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:56:34,654 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 13:56:34,654 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:56:34,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:56:34,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:56:34,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:56:34,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:56:34,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:56:34,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:56:34,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:56:34,657 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:56:34,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:56:34,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:56:34,658 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:56:34,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:56:34,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:56:34,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:56:34,659 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_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2022-11-23 13:56:34,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:56:34,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:56:34,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:56:34,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:56:34,988 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:56:34,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-23 13:56:38,038 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:56:38,265 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:56:38,266 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-23 13:56:38,273 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/data/5f89b355e/82c841e4e31b4f3cb3c63f20199ce31f/FLAG40c6a0fb9 [2022-11-23 13:56:38,289 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/data/5f89b355e/82c841e4e31b4f3cb3c63f20199ce31f [2022-11-23 13:56:38,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:56:38,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:56:38,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:56:38,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:56:38,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:56:38,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345e58a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38, skipping insertion in model container [2022-11-23 13:56:38,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:56:38,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:56:38,555 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_8506e2b9-717a-4f53-898a-7d9ef161408d/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-23 13:56:38,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:56:38,572 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:56:38,607 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_8506e2b9-717a-4f53-898a-7d9ef161408d/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-23 13:56:38,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:56:38,641 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:56:38,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38 WrapperNode [2022-11-23 13:56:38,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:56:38,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:56:38,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:56:38,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:56:38,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,733 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 418 [2022-11-23 13:56:38,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:56:38,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:56:38,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:56:38,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:56:38,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,807 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:56:38,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:56:38,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:56:38,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:56:38,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (1/1) ... [2022-11-23 13:56:38,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:56:38,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:56:38,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:56:38,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:56:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:56:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:56:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:56:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:56:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:56:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:56:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 13:56:38,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 13:56:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 13:56:38,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 13:56:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 13:56:38,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 13:56:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:56:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 13:56:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 13:56:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:56:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:56:38,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:56:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:56:38,944 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 13:56:39,075 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:56:39,077 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:56:39,952 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:56:40,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:56:40,519 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-23 13:56:40,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:40 BoogieIcfgContainer [2022-11-23 13:56:40,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:56:40,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:56:40,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:56:40,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:56:40,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:56:38" (1/3) ... [2022-11-23 13:56:40,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43023a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:40, skipping insertion in model container [2022-11-23 13:56:40,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:38" (2/3) ... [2022-11-23 13:56:40,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43023a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:40, skipping insertion in model container [2022-11-23 13:56:40,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:40" (3/3) ... [2022-11-23 13:56:40,539 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2022-11-23 13:56:40,550 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 13:56:40,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:56:40,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-23 13:56:40,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 13:56:40,740 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 13:56:40,776 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 13:56:40,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 372 places, 397 transitions, 818 flow [2022-11-23 13:56:40,792 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 372 places, 397 transitions, 818 flow [2022-11-23 13:56:40,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 397 transitions, 818 flow [2022-11-23 13:56:40,953 INFO L130 PetriNetUnfolder]: 35/394 cut-off events. [2022-11-23 13:56:40,953 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 13:56:40,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 394 events. 35/394 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 894 event pairs, 0 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 316. Up to 2 conditions per place. [2022-11-23 13:56:40,979 INFO L119 LiptonReduction]: Number of co-enabled transitions 19278 [2022-11-23 13:57:33,186 INFO L134 LiptonReduction]: Checked pairs total: 24358 [2022-11-23 13:57:33,187 INFO L136 LiptonReduction]: Total number of compositions: 486 [2022-11-23 13:57:33,195 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 75 transitions, 174 flow [2022-11-23 13:57:33,476 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5790 states, 5054 states have (on average 4.058963197467353) internal successors, (20514), 5789 states have internal predecessors, (20514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:33,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:57:33,510 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;@8b44692, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:57:33,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2022-11-23 13:57:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 5790 states, 5054 states have (on average 4.058963197467353) internal successors, (20514), 5789 states have internal predecessors, (20514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 13:57:33,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:33,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 13:57:33,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:33,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash 64977, now seen corresponding path program 1 times [2022-11-23 13:57:33,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:33,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627793211] [2022-11-23 13:57:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:33,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:33,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:33,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627793211] [2022-11-23 13:57:33,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627793211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:33,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:33,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:57:33,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818363707] [2022-11-23 13:57:33,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:33,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:33,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:33,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:34,001 INFO L87 Difference]: Start difference. First operand has 5790 states, 5054 states have (on average 4.058963197467353) internal successors, (20514), 5789 states have internal predecessors, (20514), 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) [2022-11-23 13:57:34,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:34,493 INFO L93 Difference]: Finished difference Result 7325 states and 24897 transitions. [2022-11-23 13:57:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:34,496 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 [2022-11-23 13:57:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:34,578 INFO L225 Difference]: With dead ends: 7325 [2022-11-23 13:57:34,578 INFO L226 Difference]: Without dead ends: 7325 [2022-11-23 13:57:34,580 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 [2022-11-23 13:57:34,585 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:34,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 6 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:57:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7325 states. [2022-11-23 13:57:34,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7325 to 3669. [2022-11-23 13:57:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 3319 states have (on average 3.7541428141006326) internal successors, (12460), 3668 states have internal predecessors, (12460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 12460 transitions. [2022-11-23 13:57:34,850 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 12460 transitions. Word has length 2 [2022-11-23 13:57:34,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:34,850 INFO L495 AbstractCegarLoop]: Abstraction has 3669 states and 12460 transitions. [2022-11-23 13:57:34,851 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) [2022-11-23 13:57:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 12460 transitions. [2022-11-23 13:57:34,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 13:57:34,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:34,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 13:57:34,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:57:34,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:34,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:34,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2017388, now seen corresponding path program 1 times [2022-11-23 13:57:34,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:34,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889028346] [2022-11-23 13:57:34,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:34,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:34,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889028346] [2022-11-23 13:57:34,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889028346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:34,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604789069] [2022-11-23 13:57:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:34,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:34,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:34,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:34,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:57:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:35,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 13:57:35,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:35,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:57:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:35,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604789069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:57:35,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [849566490] [2022-11-23 13:57:35,291 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 13:57:35,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:57:35,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-23 13:57:35,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935034930] [2022-11-23 13:57:35,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:57:35,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:57:35,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:35,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:57:35,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:57:35,296 INFO L87 Difference]: Start difference. First operand 3669 states and 12460 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) [2022-11-23 13:57:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:36,265 INFO L93 Difference]: Finished difference Result 18302 states and 62241 transitions. [2022-11-23 13:57:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:57:36,266 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 [2022-11-23 13:57:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:36,394 INFO L225 Difference]: With dead ends: 18302 [2022-11-23 13:57:36,394 INFO L226 Difference]: Without dead ends: 18302 [2022-11-23 13:57:36,395 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 [2022-11-23 13:57:36,399 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 356 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:36,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 15 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 13:57:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18302 states. [2022-11-23 13:57:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18302 to 3678. [2022-11-23 13:57:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3328 states have (on average 3.75390625) internal successors, (12493), 3677 states have internal predecessors, (12493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:36,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 12493 transitions. [2022-11-23 13:57:36,727 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 12493 transitions. Word has length 3 [2022-11-23 13:57:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:36,728 INFO L495 AbstractCegarLoop]: Abstraction has 3678 states and 12493 transitions. [2022-11-23 13:57:36,729 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) [2022-11-23 13:57:36,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 12493 transitions. [2022-11-23 13:57:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 13:57:36,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:36,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 13:57:36,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 13:57:36,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:36,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2017389, now seen corresponding path program 1 times [2022-11-23 13:57:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:36,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476180773] [2022-11-23 13:57:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:36,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:37,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:37,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476180773] [2022-11-23 13:57:37,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476180773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:37,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:37,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:57:37,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912316061] [2022-11-23 13:57:37,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:37,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:37,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:37,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:37,048 INFO L87 Difference]: Start difference. First operand 3678 states and 12493 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:37,232 INFO L93 Difference]: Finished difference Result 3675 states and 12481 transitions. [2022-11-23 13:57:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 13:57:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:37,253 INFO L225 Difference]: With dead ends: 3675 [2022-11-23 13:57:37,253 INFO L226 Difference]: Without dead ends: 3675 [2022-11-23 13:57:37,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:37,255 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:37,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:57:37,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2022-11-23 13:57:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3675. [2022-11-23 13:57:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 3328 states have (on average 3.750300480769231) internal successors, (12481), 3674 states have internal predecessors, (12481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 12481 transitions. [2022-11-23 13:57:37,377 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 12481 transitions. Word has length 3 [2022-11-23 13:57:37,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:37,377 INFO L495 AbstractCegarLoop]: Abstraction has 3675 states and 12481 transitions. [2022-11-23 13:57:37,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 12481 transitions. [2022-11-23 13:57:37,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 13:57:37,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:37,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 13:57:37,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:57:37,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:37,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:37,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1941352179, now seen corresponding path program 1 times [2022-11-23 13:57:37,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:37,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115991887] [2022-11-23 13:57:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:37,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:37,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:37,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115991887] [2022-11-23 13:57:37,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115991887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:37,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:37,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:57:37,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539082650] [2022-11-23 13:57:37,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:37,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:37,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:37,483 INFO L87 Difference]: Start difference. First operand 3675 states and 12481 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:37,741 INFO L93 Difference]: Finished difference Result 7335 states and 24929 transitions. [2022-11-23 13:57:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:37,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 13:57:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:37,786 INFO L225 Difference]: With dead ends: 7335 [2022-11-23 13:57:37,786 INFO L226 Difference]: Without dead ends: 7335 [2022-11-23 13:57:37,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:37,790 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 48 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:37,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 6 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:57:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7335 states. [2022-11-23 13:57:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7335 to 3681. [2022-11-23 13:57:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3334 states have (on average 3.7474505098980204) internal successors, (12494), 3680 states have internal predecessors, (12494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 12494 transitions. [2022-11-23 13:57:37,955 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 12494 transitions. Word has length 5 [2022-11-23 13:57:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:37,955 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 12494 transitions. [2022-11-23 13:57:37,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 12494 transitions. [2022-11-23 13:57:37,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 13:57:37,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:37,956 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-23 13:57:37,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:57:37,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:37,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash -26456943, now seen corresponding path program 2 times [2022-11-23 13:57:37,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:37,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715416838] [2022-11-23 13:57:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:37,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:38,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:38,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715416838] [2022-11-23 13:57:38,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715416838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:38,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873143876] [2022-11-23 13:57:38,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:57:38,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:38,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:38,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:38,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:57:38,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 13:57:38,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:57:38,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 13:57:38,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 13:57:38,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:57:38,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873143876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:38,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:57:38,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-23 13:57:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303434415] [2022-11-23 13:57:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:38,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:57:38,383 INFO L87 Difference]: Start difference. First operand 3681 states and 12494 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:38,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:38,543 INFO L93 Difference]: Finished difference Result 3680 states and 12493 transitions. [2022-11-23 13:57:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:38,544 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 [2022-11-23 13:57:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:38,564 INFO L225 Difference]: With dead ends: 3680 [2022-11-23 13:57:38,564 INFO L226 Difference]: Without dead ends: 3680 [2022-11-23 13:57:38,564 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 [2022-11-23 13:57:38,565 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:38,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:57:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2022-11-23 13:57:38,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3676. [2022-11-23 13:57:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3330 states have (on average 3.749249249249249) internal successors, (12485), 3675 states have internal predecessors, (12485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12485 transitions. [2022-11-23 13:57:38,683 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12485 transitions. Word has length 6 [2022-11-23 13:57:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:38,684 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 12485 transitions. [2022-11-23 13:57:38,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12485 transitions. [2022-11-23 13:57:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 13:57:38,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:38,685 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-23 13:57:38,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:57:38,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:38,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1623700542, now seen corresponding path program 1 times [2022-11-23 13:57:38,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:38,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741292188] [2022-11-23 13:57:38,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:39,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:39,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741292188] [2022-11-23 13:57:39,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741292188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:39,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712071273] [2022-11-23 13:57:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:39,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:39,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:39,011 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:39,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:57:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:39,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 13:57:39,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:39,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:57:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:39,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712071273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:57:39,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1187795416] [2022-11-23 13:57:39,292 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 13:57:39,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:57:39,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 13:57:39,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432803313] [2022-11-23 13:57:39,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:57:39,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:57:39,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:39,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:57:39,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:57:39,297 INFO L87 Difference]: Start difference. First operand 3676 states and 12485 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:39,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:39,977 INFO L93 Difference]: Finished difference Result 18310 states and 62279 transitions. [2022-11-23 13:57:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:57:39,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 13:57:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:40,093 INFO L225 Difference]: With dead ends: 18310 [2022-11-23 13:57:40,094 INFO L226 Difference]: Without dead ends: 18310 [2022-11-23 13:57:40,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:57:40,095 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 342 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:40,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 18 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:57:40,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18310 states. [2022-11-23 13:57:40,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18310 to 3694. [2022-11-23 13:57:40,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 3348 states have (on average 3.745221027479092) internal successors, (12539), 3693 states have internal predecessors, (12539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 12539 transitions. [2022-11-23 13:57:40,363 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 12539 transitions. Word has length 7 [2022-11-23 13:57:40,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:40,365 INFO L495 AbstractCegarLoop]: Abstraction has 3694 states and 12539 transitions. [2022-11-23 13:57:40,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:40,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 12539 transitions. [2022-11-23 13:57:40,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 13:57:40,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:40,366 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-23 13:57:40,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 13:57:40,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:40,574 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1623700543, now seen corresponding path program 1 times [2022-11-23 13:57:40,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:40,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609085952] [2022-11-23 13:57:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:40,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:40,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:40,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609085952] [2022-11-23 13:57:40,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609085952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040717673] [2022-11-23 13:57:40,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:40,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:40,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:40,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:40,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:57:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:40,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 13:57:40,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:40,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:57:40,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040717673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:40,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:57:40,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-23 13:57:40,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667626554] [2022-11-23 13:57:40,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:40,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:57:40,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:40,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:57:40,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:57:40,942 INFO L87 Difference]: Start difference. First operand 3694 states and 12539 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:41,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:41,238 INFO L93 Difference]: Finished difference Result 7347 states and 24954 transitions. [2022-11-23 13:57:41,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:57:41,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 13:57:41,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:41,289 INFO L225 Difference]: With dead ends: 7347 [2022-11-23 13:57:41,289 INFO L226 Difference]: Without dead ends: 7347 [2022-11-23 13:57:41,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:57:41,290 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 98 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:41,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 9 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:57:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2022-11-23 13:57:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 3693. [2022-11-23 13:57:41,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3348 states have (on average 3.739247311827957) internal successors, (12519), 3692 states have internal predecessors, (12519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 12519 transitions. [2022-11-23 13:57:41,440 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 12519 transitions. Word has length 7 [2022-11-23 13:57:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:41,440 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 12519 transitions. [2022-11-23 13:57:41,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 12519 transitions. [2022-11-23 13:57:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 13:57:41,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:41,441 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-23 13:57:41,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 13:57:41,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:41,647 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:41,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1599955362, now seen corresponding path program 1 times [2022-11-23 13:57:41,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:41,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357368022] [2022-11-23 13:57:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:41,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 13:57:41,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:41,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357368022] [2022-11-23 13:57:41,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357368022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:41,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:41,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:57:41,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134112327] [2022-11-23 13:57:41,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:41,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:57:41,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:57:41,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:57:41,753 INFO L87 Difference]: Start difference. First operand 3693 states and 12519 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:41,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:41,956 INFO L93 Difference]: Finished difference Result 3706 states and 12538 transitions. [2022-11-23 13:57:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:57:41,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 13:57:41,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:41,978 INFO L225 Difference]: With dead ends: 3706 [2022-11-23 13:57:41,978 INFO L226 Difference]: Without dead ends: 3706 [2022-11-23 13:57:41,978 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 [2022-11-23 13:57:41,979 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:41,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 9 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:57:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2022-11-23 13:57:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3705. [2022-11-23 13:57:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 3360 states have (on average 3.731547619047619) internal successors, (12538), 3704 states have internal predecessors, (12538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 12538 transitions. [2022-11-23 13:57:42,085 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 12538 transitions. Word has length 7 [2022-11-23 13:57:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:42,085 INFO L495 AbstractCegarLoop]: Abstraction has 3705 states and 12538 transitions. [2022-11-23 13:57:42,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 12538 transitions. [2022-11-23 13:57:42,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 13:57:42,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:42,087 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-23 13:57:42,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 13:57:42,088 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:42,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:42,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1530069017, now seen corresponding path program 1 times [2022-11-23 13:57:42,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:42,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126928278] [2022-11-23 13:57:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:42,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 13:57:42,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:42,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126928278] [2022-11-23 13:57:42,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126928278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:42,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308047405] [2022-11-23 13:57:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:42,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:42,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:42,252 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:42,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 13:57:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:42,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 13:57:42,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 13:57:42,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:57:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 13:57:42,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308047405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:57:42,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [76256970] [2022-11-23 13:57:42,679 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 13:57:42,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:57:42,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-11-23 13:57:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405049960] [2022-11-23 13:57:42,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:57:42,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 13:57:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 13:57:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-23 13:57:42,682 INFO L87 Difference]: Start difference. First operand 3705 states and 12538 transitions. Second operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:43,818 INFO L93 Difference]: Finished difference Result 17260 states and 58557 transitions. [2022-11-23 13:57:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 13:57:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 13:57:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:43,925 INFO L225 Difference]: With dead ends: 17260 [2022-11-23 13:57:43,925 INFO L226 Difference]: Without dead ends: 17260 [2022-11-23 13:57:43,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-11-23 13:57:43,926 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 681 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:43,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 51 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 13:57:43,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17260 states. [2022-11-23 13:57:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17260 to 4820. [2022-11-23 13:57:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 4475 states have (on average 4.103240223463687) internal successors, (18362), 4819 states have internal predecessors, (18362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 18362 transitions. [2022-11-23 13:57:44,290 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 18362 transitions. Word has length 8 [2022-11-23 13:57:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:44,290 INFO L495 AbstractCegarLoop]: Abstraction has 4820 states and 18362 transitions. [2022-11-23 13:57:44,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 18362 transitions. [2022-11-23 13:57:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 13:57:44,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:44,292 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-11-23 13:57:44,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-23 13:57:44,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 13:57:44,498 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:44,499 INFO L85 PathProgramCache]: Analyzing trace with hash 223423042, now seen corresponding path program 2 times [2022-11-23 13:57:44,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:44,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625617828] [2022-11-23 13:57:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:44,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 13:57:44,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:44,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625617828] [2022-11-23 13:57:44,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625617828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:44,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079263797] [2022-11-23 13:57:44,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:57:44,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:44,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:44,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:44,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 13:57:44,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 13:57:44,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:57:44,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 13:57:44,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:45,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 13:57:45,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:57:45,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079263797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:45,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:57:45,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-11-23 13:57:45,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320933356] [2022-11-23 13:57:45,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:45,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:57:45,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:45,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:57:45,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:57:45,017 INFO L87 Difference]: Start difference. First operand 4820 states and 18362 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:45,271 INFO L93 Difference]: Finished difference Result 8837 states and 34053 transitions. [2022-11-23 13:57:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:57:45,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 13:57:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:45,323 INFO L225 Difference]: With dead ends: 8837 [2022-11-23 13:57:45,323 INFO L226 Difference]: Without dead ends: 8837 [2022-11-23 13:57:45,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-23 13:57:45,324 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 146 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:45,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:57:45,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8837 states. [2022-11-23 13:57:45,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8837 to 3338. [2022-11-23 13:57:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3338 states, 3043 states have (on average 3.7039106145251397) internal successors, (11271), 3337 states have internal predecessors, (11271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 11271 transitions. [2022-11-23 13:57:45,549 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 11271 transitions. Word has length 9 [2022-11-23 13:57:45,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:45,549 INFO L495 AbstractCegarLoop]: Abstraction has 3338 states and 11271 transitions. [2022-11-23 13:57:45,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 11271 transitions. [2022-11-23 13:57:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 13:57:45,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:45,552 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2022-11-23 13:57:45,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 13:57:45,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 13:57:45,758 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:45,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:45,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1283442988, now seen corresponding path program 1 times [2022-11-23 13:57:45,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:45,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351603899] [2022-11-23 13:57:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:45,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:45,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:45,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351603899] [2022-11-23 13:57:45,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351603899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:45,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954042175] [2022-11-23 13:57:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:45,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:45,951 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:45,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 13:57:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:46,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 13:57:46,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:46,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:57:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:46,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954042175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:57:46,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1713750076] [2022-11-23 13:57:46,316 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 13:57:46,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:57:46,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 13:57:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726928857] [2022-11-23 13:57:46,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:57:46,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 13:57:46,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 13:57:46,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 13:57:46,318 INFO L87 Difference]: Start difference. First operand 3338 states and 11271 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:47,655 INFO L93 Difference]: Finished difference Result 36314 states and 123169 transitions. [2022-11-23 13:57:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 13:57:47,659 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 13:57:47,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:47,842 INFO L225 Difference]: With dead ends: 36314 [2022-11-23 13:57:47,843 INFO L226 Difference]: Without dead ends: 36314 [2022-11-23 13:57:47,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 13:57:47,844 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1008 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:47,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 39 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 13:57:47,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36314 states. [2022-11-23 13:57:48,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36314 to 3368. [2022-11-23 13:57:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 3073 states have (on average 3.689228766677514) internal successors, (11337), 3367 states have internal predecessors, (11337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 11337 transitions. [2022-11-23 13:57:48,436 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 11337 transitions. Word has length 9 [2022-11-23 13:57:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:48,436 INFO L495 AbstractCegarLoop]: Abstraction has 3368 states and 11337 transitions. [2022-11-23 13:57:48,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 11337 transitions. [2022-11-23 13:57:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 13:57:48,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:48,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:48,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 13:57:48,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:48,645 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:48,646 INFO L85 PathProgramCache]: Analyzing trace with hash -994731280, now seen corresponding path program 1 times [2022-11-23 13:57:48,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:48,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576174057] [2022-11-23 13:57:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:48,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:57:48,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:48,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576174057] [2022-11-23 13:57:48,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576174057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:48,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:48,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:57:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939114760] [2022-11-23 13:57:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:48,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:57:48,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:57:48,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:57:48,784 INFO L87 Difference]: Start difference. First operand 3368 states and 11337 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2022-11-23 13:57:49,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:49,033 INFO L93 Difference]: Finished difference Result 4826 states and 15816 transitions. [2022-11-23 13:57:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:57:49,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 [2022-11-23 13:57:49,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:49,052 INFO L225 Difference]: With dead ends: 4826 [2022-11-23 13:57:49,053 INFO L226 Difference]: Without dead ends: 4812 [2022-11-23 13:57:49,053 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 [2022-11-23 13:57:49,054 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 77 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:49,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 9 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:57:49,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4812 states. [2022-11-23 13:57:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4812 to 4451. [2022-11-23 13:57:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 4156 states have (on average 3.5837343599615012) internal successors, (14894), 4450 states have internal predecessors, (14894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 14894 transitions. [2022-11-23 13:57:49,177 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 14894 transitions. Word has length 13 [2022-11-23 13:57:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:49,178 INFO L495 AbstractCegarLoop]: Abstraction has 4451 states and 14894 transitions. [2022-11-23 13:57:49,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2022-11-23 13:57:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 14894 transitions. [2022-11-23 13:57:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 13:57:49,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:49,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:49,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 13:57:49,180 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:49,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1110827034, now seen corresponding path program 1 times [2022-11-23 13:57:49,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:49,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434001961] [2022-11-23 13:57:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:57:49,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:49,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434001961] [2022-11-23 13:57:49,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434001961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:49,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:49,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:57:49,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770781611] [2022-11-23 13:57:49,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:49,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:57:49,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:49,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:57:49,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:57:49,508 INFO L87 Difference]: Start difference. First operand 4451 states and 14894 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2022-11-23 13:57:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:50,090 INFO L93 Difference]: Finished difference Result 5330 states and 17192 transitions. [2022-11-23 13:57:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 13:57:50,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 [2022-11-23 13:57:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:50,113 INFO L225 Difference]: With dead ends: 5330 [2022-11-23 13:57:50,113 INFO L226 Difference]: Without dead ends: 5277 [2022-11-23 13:57:50,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-11-23 13:57:50,114 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 170 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:50,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 36 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:57:50,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2022-11-23 13:57:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 4878. [2022-11-23 13:57:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 4577 states have (on average 3.5409656980554947) internal successors, (16207), 4877 states have internal predecessors, (16207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 16207 transitions. [2022-11-23 13:57:50,250 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 16207 transitions. Word has length 13 [2022-11-23 13:57:50,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:50,251 INFO L495 AbstractCegarLoop]: Abstraction has 4878 states and 16207 transitions. [2022-11-23 13:57:50,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2022-11-23 13:57:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 16207 transitions. [2022-11-23 13:57:50,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 13:57:50,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:50,253 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2022-11-23 13:57:50,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 13:57:50,254 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:50,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:50,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1346331745, now seen corresponding path program 2 times [2022-11-23 13:57:50,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:50,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680278345] [2022-11-23 13:57:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:50,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:50,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:50,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680278345] [2022-11-23 13:57:50,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680278345] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:50,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903415226] [2022-11-23 13:57:50,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:57:50,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:50,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:50,467 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:50,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 13:57:50,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 13:57:50,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:57:50,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 13:57:50,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:57:50,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:57:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:57:50,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903415226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:57:50,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1153850507] [2022-11-23 13:57:50,830 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 13:57:50,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:57:50,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 8 [2022-11-23 13:57:50,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588010354] [2022-11-23 13:57:50,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:57:50,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 13:57:50,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:50,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 13:57:50,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:57:50,832 INFO L87 Difference]: Start difference. First operand 4878 states and 16207 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:51,661 INFO L93 Difference]: Finished difference Result 21537 states and 72394 transitions. [2022-11-23 13:57:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 13:57:51,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 13:57:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:51,732 INFO L225 Difference]: With dead ends: 21537 [2022-11-23 13:57:51,732 INFO L226 Difference]: Without dead ends: 21537 [2022-11-23 13:57:51,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-23 13:57:51,732 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 862 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:51,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 21 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 13:57:51,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21537 states. [2022-11-23 13:57:52,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21537 to 4822. [2022-11-23 13:57:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4522 states have (on average 3.5570544007076514) internal successors, (16085), 4821 states have internal predecessors, (16085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:52,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 16085 transitions. [2022-11-23 13:57:52,055 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 16085 transitions. Word has length 13 [2022-11-23 13:57:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:52,056 INFO L495 AbstractCegarLoop]: Abstraction has 4822 states and 16085 transitions. [2022-11-23 13:57:52,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 16085 transitions. [2022-11-23 13:57:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 13:57:52,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:52,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:52,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 13:57:52,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 13:57:52,264 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:52,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:52,265 INFO L85 PathProgramCache]: Analyzing trace with hash -67768728, now seen corresponding path program 1 times [2022-11-23 13:57:52,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:52,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782406616] [2022-11-23 13:57:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:52,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:57:52,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:52,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782406616] [2022-11-23 13:57:52,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782406616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:52,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:52,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 13:57:52,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671504633] [2022-11-23 13:57:52,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:52,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 13:57:52,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:52,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 13:57:52,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 13:57:52,697 INFO L87 Difference]: Start difference. First operand 4822 states and 16085 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:53,453 INFO L93 Difference]: Finished difference Result 5292 states and 17053 transitions. [2022-11-23 13:57:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 13:57:53,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 13:57:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:53,472 INFO L225 Difference]: With dead ends: 5292 [2022-11-23 13:57:53,473 INFO L226 Difference]: Without dead ends: 5276 [2022-11-23 13:57:53,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-23 13:57:53,475 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 216 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:53,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 53 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 13:57:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2022-11-23 13:57:53,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 4682. [2022-11-23 13:57:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4682 states, 4382 states have (on average 3.5771337288909173) internal successors, (15675), 4681 states have internal predecessors, (15675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 15675 transitions. [2022-11-23 13:57:53,776 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 15675 transitions. Word has length 14 [2022-11-23 13:57:53,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:53,776 INFO L495 AbstractCegarLoop]: Abstraction has 4682 states and 15675 transitions. [2022-11-23 13:57:53,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 15675 transitions. [2022-11-23 13:57:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 13:57:53,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:53,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:53,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 13:57:53,780 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:53,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:53,781 INFO L85 PathProgramCache]: Analyzing trace with hash 184574957, now seen corresponding path program 1 times [2022-11-23 13:57:53,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:53,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318597082] [2022-11-23 13:57:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:53,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:57:54,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:54,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318597082] [2022-11-23 13:57:54,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318597082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:54,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:54,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:57:54,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912990601] [2022-11-23 13:57:54,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:54,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:57:54,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:57:54,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:57:54,116 INFO L87 Difference]: Start difference. First operand 4682 states and 15675 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:54,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:54,402 INFO L93 Difference]: Finished difference Result 4695 states and 15699 transitions. [2022-11-23 13:57:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:57:54,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 13:57:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:54,424 INFO L225 Difference]: With dead ends: 4695 [2022-11-23 13:57:54,424 INFO L226 Difference]: Without dead ends: 4695 [2022-11-23 13:57:54,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:57:54,425 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:54,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 11 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:57:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2022-11-23 13:57:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4692. [2022-11-23 13:57:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4392 states have (on average 3.5737704918032787) internal successors, (15696), 4691 states have internal predecessors, (15696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 15696 transitions. [2022-11-23 13:57:54,590 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 15696 transitions. Word has length 14 [2022-11-23 13:57:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:54,592 INFO L495 AbstractCegarLoop]: Abstraction has 4692 states and 15696 transitions. [2022-11-23 13:57:54,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 15696 transitions. [2022-11-23 13:57:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 13:57:54,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:54,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:54,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 13:57:54,594 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1305727493, now seen corresponding path program 1 times [2022-11-23 13:57:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:54,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564833242] [2022-11-23 13:57:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:57:54,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:54,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564833242] [2022-11-23 13:57:54,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564833242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:54,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:54,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:57:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359541581] [2022-11-23 13:57:54,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:54,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:57:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:54,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:57:54,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:57:54,765 INFO L87 Difference]: Start difference. First operand 4692 states and 15696 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:55,233 INFO L93 Difference]: Finished difference Result 7633 states and 24706 transitions. [2022-11-23 13:57:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:57:55,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-11-23 13:57:55,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:55,262 INFO L225 Difference]: With dead ends: 7633 [2022-11-23 13:57:55,262 INFO L226 Difference]: Without dead ends: 7605 [2022-11-23 13:57:55,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:57:55,263 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 116 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:55,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 15 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:57:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2022-11-23 13:57:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 5275. [2022-11-23 13:57:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 4975 states have (on average 3.623718592964824) internal successors, (18028), 5274 states have internal predecessors, (18028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 18028 transitions. [2022-11-23 13:57:55,421 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 18028 transitions. Word has length 15 [2022-11-23 13:57:55,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:55,422 INFO L495 AbstractCegarLoop]: Abstraction has 5275 states and 18028 transitions. [2022-11-23 13:57:55,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:55,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 18028 transitions. [2022-11-23 13:57:55,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 13:57:55,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:55,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:55,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 13:57:55,425 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:55,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1421823247, now seen corresponding path program 1 times [2022-11-23 13:57:55,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:55,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555940849] [2022-11-23 13:57:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:55,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:57:55,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:55,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555940849] [2022-11-23 13:57:55,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555940849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:55,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:55,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:57:55,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600847768] [2022-11-23 13:57:55,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:55,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:57:55,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:55,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:57:55,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:57:55,662 INFO L87 Difference]: Start difference. First operand 5275 states and 18028 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:56,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:56,176 INFO L93 Difference]: Finished difference Result 7801 states and 25052 transitions. [2022-11-23 13:57:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:57:56,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-11-23 13:57:56,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:56,207 INFO L225 Difference]: With dead ends: 7801 [2022-11-23 13:57:56,207 INFO L226 Difference]: Without dead ends: 7731 [2022-11-23 13:57:56,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:57:56,208 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 150 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:56,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 23 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 13:57:56,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2022-11-23 13:57:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 4892. [2022-11-23 13:57:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4892 states, 4592 states have (on average 3.5409407665505226) internal successors, (16260), 4891 states have internal predecessors, (16260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 16260 transitions. [2022-11-23 13:57:56,396 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 16260 transitions. Word has length 15 [2022-11-23 13:57:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:56,396 INFO L495 AbstractCegarLoop]: Abstraction has 4892 states and 16260 transitions. [2022-11-23 13:57:56,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:56,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 16260 transitions. [2022-11-23 13:57:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 13:57:56,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:56,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:56,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 13:57:56,399 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:56,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:56,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1703459882, now seen corresponding path program 1 times [2022-11-23 13:57:56,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:56,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939036789] [2022-11-23 13:57:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:56,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:57:56,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:56,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939036789] [2022-11-23 13:57:56,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939036789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:56,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:56,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:57:56,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987028358] [2022-11-23 13:57:56,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:56,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:57:56,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:56,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:57:56,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:56,500 INFO L87 Difference]: Start difference. First operand 4892 states and 16260 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:56,757 INFO L93 Difference]: Finished difference Result 8565 states and 28578 transitions. [2022-11-23 13:57:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:57:56,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2022-11-23 13:57:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:56,798 INFO L225 Difference]: With dead ends: 8565 [2022-11-23 13:57:56,799 INFO L226 Difference]: Without dead ends: 8565 [2022-11-23 13:57:56,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:57:56,800 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:56,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 7 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:57:56,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8565 states. [2022-11-23 13:57:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8565 to 6747. [2022-11-23 13:57:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6747 states, 6447 states have (on average 3.7682643089809216) internal successors, (24294), 6746 states have internal predecessors, (24294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6747 states to 6747 states and 24294 transitions. [2022-11-23 13:57:57,014 INFO L78 Accepts]: Start accepts. Automaton has 6747 states and 24294 transitions. Word has length 15 [2022-11-23 13:57:57,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:57,014 INFO L495 AbstractCegarLoop]: Abstraction has 6747 states and 24294 transitions. [2022-11-23 13:57:57,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:57,015 INFO L276 IsEmpty]: Start isEmpty. Operand 6747 states and 24294 transitions. [2022-11-23 13:57:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 13:57:57,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:57,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:57,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 13:57:57,017 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:57,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1703459819, now seen corresponding path program 1 times [2022-11-23 13:57:57,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:57,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015494807] [2022-11-23 13:57:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:57,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:57:57,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:57,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015494807] [2022-11-23 13:57:57,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015494807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:57,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:57:57,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:57:57,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369201512] [2022-11-23 13:57:57,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:57,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:57:57,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:57,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:57:57,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:57:57,323 INFO L87 Difference]: Start difference. First operand 6747 states and 24294 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:57,932 INFO L93 Difference]: Finished difference Result 8778 states and 30070 transitions. [2022-11-23 13:57:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 13:57:57,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 15 [2022-11-23 13:57:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:57,962 INFO L225 Difference]: With dead ends: 8778 [2022-11-23 13:57:57,962 INFO L226 Difference]: Without dead ends: 8244 [2022-11-23 13:57:57,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-11-23 13:57:57,963 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 173 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:57,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 33 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:57:57,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2022-11-23 13:57:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 7328. [2022-11-23 13:57:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7328 states, 7022 states have (on average 3.743377954998576) internal successors, (26286), 7327 states have internal predecessors, (26286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:58,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7328 states to 7328 states and 26286 transitions. [2022-11-23 13:57:58,167 INFO L78 Accepts]: Start accepts. Automaton has 7328 states and 26286 transitions. Word has length 15 [2022-11-23 13:57:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:58,168 INFO L495 AbstractCegarLoop]: Abstraction has 7328 states and 26286 transitions. [2022-11-23 13:57:58,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 7328 states and 26286 transitions. [2022-11-23 13:57:58,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 13:57:58,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:58,169 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2022-11-23 13:57:58,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 13:57:58,170 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:58,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:58,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1591679212, now seen corresponding path program 2 times [2022-11-23 13:57:58,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:58,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020381829] [2022-11-23 13:57:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:58,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:58,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:57:58,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020381829] [2022-11-23 13:57:58,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020381829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:57:58,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70349107] [2022-11-23 13:57:58,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:57:58,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:58,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:58,469 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:58,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 13:57:58,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 13:57:58,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:57:58,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 13:57:58,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 13:57:58,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:57:58,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70349107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:57:58,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:57:58,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2022-11-23 13:57:58,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530777245] [2022-11-23 13:57:58,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:57:58,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:57:58,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:58,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:57:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-11-23 13:57:58,822 INFO L87 Difference]: Start difference. First operand 7328 states and 26286 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:59,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:57:59,041 INFO L93 Difference]: Finished difference Result 7800 states and 27249 transitions. [2022-11-23 13:57:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:57:59,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 15 [2022-11-23 13:57:59,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:57:59,071 INFO L225 Difference]: With dead ends: 7800 [2022-11-23 13:57:59,071 INFO L226 Difference]: Without dead ends: 7786 [2022-11-23 13:57:59,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-11-23 13:57:59,072 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 114 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:57:59,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 8 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:57:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7786 states. [2022-11-23 13:57:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7786 to 7295. [2022-11-23 13:57:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7295 states, 6990 states have (on average 3.7507868383404865) internal successors, (26218), 7294 states have internal predecessors, (26218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7295 states to 7295 states and 26218 transitions. [2022-11-23 13:57:59,272 INFO L78 Accepts]: Start accepts. Automaton has 7295 states and 26218 transitions. Word has length 15 [2022-11-23 13:57:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:57:59,275 INFO L495 AbstractCegarLoop]: Abstraction has 7295 states and 26218 transitions. [2022-11-23 13:57:59,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:57:59,275 INFO L276 IsEmpty]: Start isEmpty. Operand 7295 states and 26218 transitions. [2022-11-23 13:57:59,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 13:57:59,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:57:59,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:57:59,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 13:57:59,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:59,488 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-23 13:57:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:57:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash -277867211, now seen corresponding path program 1 times [2022-11-23 13:57:59,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:57:59,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638504873] [2022-11-23 13:57:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:57:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:58:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:58:01,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:58:01,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638504873] [2022-11-23 13:58:01,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638504873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:58:01,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831211515] [2022-11-23 13:58:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:58:01,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:58:01,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:58:01,169 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:58:01,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8506e2b9-717a-4f53-898a-7d9ef161408d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 13:58:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:58:01,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-23 13:58:01,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:58:01,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 13:58:01,697 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 13:58:01,697 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 [2022-11-23 13:58:01,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 13:58:01,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 13:58:01,967 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 26 treesize of output 28 [2022-11-23 13:58:01,980 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 [2022-11-23 13:58:02,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:58:02,109 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 85 treesize of output 79 [2022-11-23 13:58:02,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:58:02,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-23 13:58:02,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:58:02,138 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 34 treesize of output 36 [2022-11-23 13:58:02,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:58:02,312 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 72 treesize of output 68 [2022-11-23 13:58:02,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:58:02,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-23 13:58:02,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:58:02,338 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 34 treesize of output 36 [2022-11-23 13:58:02,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:58:02,493 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 59 treesize of output 57 [2022-11-23 13:58:02,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:58:02,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-23 13:58:02,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:58:02,515 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 34 treesize of output 36 [2022-11-23 13:58:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:58:02,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:58:03,376 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1503 (Array Int Int)) (v_ArrVal_1502 (Array Int Int)) (v_ArrVal_1501 (Array Int Int)) (v_ArrVal_1500 (Array Int Int)) (v_ArrVal_1499 (Array Int Int)) (v_ArrVal_1498 (Array Int Int)) (v_ArrVal_1497 (Array Int Int)) (v_ArrVal_1496 (Array Int Int)) (v_ArrVal_1495 (Array Int Int)) (~B~0.base Int) (~A~0.base Int) (~A~0.offset Int) (|thread3Thread1of1ForFork1_~i~2#1| Int) (~B~0.offset Int)) (let ((.cse2 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1497) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1498) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1503)) (.cse4 (* 4 |thread3Thread1of1ForFork1_~i~2#1|))) (let ((.cse0 (select (select .cse2 ~A~0.base) (+ ~A~0.offset .cse4))) (.cse1 (select (select .cse2 ~B~0.base) (+ ~B~0.offset .cse4)))) (or (not (<= 0 .cse0)) (not (<= 0 .cse1)) (< (let ((.cse3 (+ (* .cse0 4) c_~mult~0.offset))) (select (select .cse2 (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1495) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1499) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1501) c_~mult~0.base) .cse3)) (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1496) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1500) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1502) c_~mult~0.base) .cse3) (* .cse1 4)))) 4294967296) (< |c_ULTIMATE.start_main_~i~3#1| (+ .cse0 1)) (not (< .cse1 c_~maxB~0)))))) is different from false [2022-11-23 13:58:03,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:58:03,454 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 141 treesize of output 142 [2022-11-23 13:58:03,474 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:58:03,475 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 129 treesize of output 130 [2022-11-23 13:58:03,512 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:58:03,513 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 932 treesize of output 928 [2022-11-23 13:58:03,570 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:58:03,575 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 26114 treesize of output 25242 [2022-11-23 13:58:03,808 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 25206 treesize of output 21878 [2022-11-23 13:58:03,974 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 21878 treesize of output 21046 [2022-11-23 13:58:04,144 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 21046 treesize of output 19382 [2022-11-23 13:58:04,290 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 19382 treesize of output 16054 [2022-11-23 13:58:04,434 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 16054 treesize of output 14390 [2022-11-23 13:58:04,574 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 7610 treesize of output 6778