./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:30:19,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:30:19,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:30:19,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:30:19,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:30:19,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:30:19,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:30:19,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:30:19,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:30:19,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:30:19,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:30:19,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:30:19,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:30:19,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:30:19,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:30:19,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:30:19,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:30:19,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:30:19,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:30:19,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:30:19,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:30:19,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:30:19,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:30:19,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:30:19,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:30:19,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:30:19,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:30:19,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:30:19,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:30:19,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:30:19,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:30:19,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:30:19,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:30:19,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:30:19,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:30:19,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:30:19,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:30:19,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:30:19,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:30:19,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:30:19,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:30:19,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:30:19,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:30:19,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:30:19,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:30:19,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:30:19,834 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:30:19,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:30:19,834 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:30:19,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:30:19,843 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:30:19,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:30:19,845 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:30:19,846 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:30:19,846 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:30:19,847 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:30:19,847 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:30:19,847 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:30:19,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:30:19,849 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:30:19,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:30:19,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:30:19,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:30:19,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:30:19,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:30:19,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:30:19,851 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:30:19,851 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:30:19,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:30:19,852 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:30:19,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:30:19,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:30:19,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:30:19,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:30:19,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:30:19,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:30:19,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:30:19,854 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:30:19,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:30:19,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:30:19,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:30:19,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:30:19,856 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2021-11-19 13:30:20,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:30:20,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:30:20,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:30:20,325 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:30:20,326 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:30:20,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/pthread/stack_longer-2.i [2021-11-19 13:30:20,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/data/334c4429f/04df7d8284364c30a56756b2ce9e6468/FLAGb465358de [2021-11-19 13:30:21,206 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:30:21,206 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/sv-benchmarks/c/pthread/stack_longer-2.i [2021-11-19 13:30:21,240 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/data/334c4429f/04df7d8284364c30a56756b2ce9e6468/FLAGb465358de [2021-11-19 13:30:21,448 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/data/334c4429f/04df7d8284364c30a56756b2ce9e6468 [2021-11-19 13:30:21,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:30:21,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:30:21,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:30:21,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:30:21,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:30:21,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:30:21" (1/1) ... [2021-11-19 13:30:21,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f3c403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:21, skipping insertion in model container [2021-11-19 13:30:21,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:30:21" (1/1) ... [2021-11-19 13:30:21,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:30:21,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:30:22,102 WARN L230 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_9695f33a-059e-451d-a82f-4464b3eceb1f/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2021-11-19 13:30:22,134 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:30:22,149 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:30:22,194 WARN L230 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_9695f33a-059e-451d-a82f-4464b3eceb1f/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2021-11-19 13:30:22,207 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:30:22,286 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:30:22,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22 WrapperNode [2021-11-19 13:30:22,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:30:22,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:30:22,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:30:22,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:30:22,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (1/1) ... [2021-11-19 13:30:22,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (1/1) ... [2021-11-19 13:30:22,361 INFO L137 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 148 [2021-11-19 13:30:22,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:30:22,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:30:22,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:30:22,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:30:22,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (1/1) ... [2021-11-19 13:30:22,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (1/1) ... [2021-11-19 13:30:22,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (1/1) ... [2021-11-19 13:30:22,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (1/1) ... [2021-11-19 13:30:22,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (1/1) ... [2021-11-19 13:30:22,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (1/1) ... [2021-11-19 13:30:22,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (1/1) ... [2021-11-19 13:30:22,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:30:22,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:30:22,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:30:22,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:30:22,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (1/1) ... [2021-11-19 13:30:22,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:30:22,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:22,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:30:22,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:30:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-11-19 13:30:22,547 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-11-19 13:30:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-11-19 13:30:22,548 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-11-19 13:30:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:30:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:30:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 13:30:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 13:30:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-19 13:30:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:30:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:30:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:30:22,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:30:22,553 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 13:30:22,731 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:30:22,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:30:23,207 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:30:23,220 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:30:23,220 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:30:23,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:30:23 BoogieIcfgContainer [2021-11-19 13:30:23,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:30:23,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:30:23,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:30:23,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:30:23,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:30:21" (1/3) ... [2021-11-19 13:30:23,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18853576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:30:23, skipping insertion in model container [2021-11-19 13:30:23,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:22" (2/3) ... [2021-11-19 13:30:23,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18853576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:30:23, skipping insertion in model container [2021-11-19 13:30:23,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:30:23" (3/3) ... [2021-11-19 13:30:23,238 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2021-11-19 13:30:23,252 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 13:30:23,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:30:23,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:30:23,253 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 13:30:23,327 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,327 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,328 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,328 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,328 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,329 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,329 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,329 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,330 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,330 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,330 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,330 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,331 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,331 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,331 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,332 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,332 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,332 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,333 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,333 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,333 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,333 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,334 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet40#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,334 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet40#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,335 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet40#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,335 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet40#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,335 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,335 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,336 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,336 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,336 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,336 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,337 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,337 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,337 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,338 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,338 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,338 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,339 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,339 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,339 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,339 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,340 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,340 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,340 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,341 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,341 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,341 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,342 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,342 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,342 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,343 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,343 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,343 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,343 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,344 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,344 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,344 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,344 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,345 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,345 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,345 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,346 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,346 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,346 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,346 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,347 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,347 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,347 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,347 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,348 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,348 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,348 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,349 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,349 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,349 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,350 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,350 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,350 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,351 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,351 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,351 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,352 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,352 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,352 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,352 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,353 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,353 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,353 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,353 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,354 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,354 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,355 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,355 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,355 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,355 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,356 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,356 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,356 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,357 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,357 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,357 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,358 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,358 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,358 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,359 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,359 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,359 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,359 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,360 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,360 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,360 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,361 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,361 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,361 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,362 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,362 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,362 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,362 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,363 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,363 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,363 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,363 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,364 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,364 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,364 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,364 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,365 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,365 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,365 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,365 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,366 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,366 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,366 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,366 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,367 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,368 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,368 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,368 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,369 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,369 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,369 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,369 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,369 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,370 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,370 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,370 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,370 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,371 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,371 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,371 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,372 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,372 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,372 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,372 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,372 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,373 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,373 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,373 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,374 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,374 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,374 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,375 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,375 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,375 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,375 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,376 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,376 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,376 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,376 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,376 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,377 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,377 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,377 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,377 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,378 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,378 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,378 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,378 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,378 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,379 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,379 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,379 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,379 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,380 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,380 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,380 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,380 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,380 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,381 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,381 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,381 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,381 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,382 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,382 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,382 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,382 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,383 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,383 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,383 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,384 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,384 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,384 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,384 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,385 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,385 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,385 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,385 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,388 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,388 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,388 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,388 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,389 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,389 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,389 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,389 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,390 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,390 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,390 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,390 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,391 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,391 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,391 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,392 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,392 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,392 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,392 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,393 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,393 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,393 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,393 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,393 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,394 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,394 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,394 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,394 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,395 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,395 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,399 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,399 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,400 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,400 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,400 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,400 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,401 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,401 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,401 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,401 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,402 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,402 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,402 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,402 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,402 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,403 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,403 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret37#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,403 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,407 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,407 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,407 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,408 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,408 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,408 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,408 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,408 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,409 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,409 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet40#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,409 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,409 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,410 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,410 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,410 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,410 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,411 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,411 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,411 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,411 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,411 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,412 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,412 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:30:23,416 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-19 13:30:23,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:30:23,485 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:30:23,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-19 13:30:23,505 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:30:23,522 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 170 transitions, 356 flow [2021-11-19 13:30:23,526 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 170 transitions, 356 flow [2021-11-19 13:30:23,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 167 places, 170 transitions, 356 flow [2021-11-19 13:30:23,679 INFO L129 PetriNetUnfolder]: 10/168 cut-off events. [2021-11-19 13:30:23,681 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-19 13:30:23,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 168 events. 10/168 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 411 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 126. Up to 3 conditions per place. [2021-11-19 13:30:23,701 INFO L116 LiptonReduction]: Number of co-enabled transitions 8324 [2021-11-19 13:30:30,915 INFO L131 LiptonReduction]: Checked pairs total: 11210 [2021-11-19 13:30:30,915 INFO L133 LiptonReduction]: Total number of compositions: 162 [2021-11-19 13:30:30,927 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 37 transitions, 90 flow [2021-11-19 13:30:30,971 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 304 states, 301 states have (on average 2.681063122923588) internal successors, (807), 303 states have internal predecessors, (807), 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) [2021-11-19 13:30:30,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 304 states, 301 states have (on average 2.681063122923588) internal successors, (807), 303 states have internal predecessors, (807), 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) [2021-11-19 13:30:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 13:30:30,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:30,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 13:30:30,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:30,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash -947993756, now seen corresponding path program 1 times [2021-11-19 13:30:31,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:31,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862752644] [2021-11-19 13:30:31,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:31,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:31,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:31,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862752644] [2021-11-19 13:30:31,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862752644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:31,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:31,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:30:31,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114931564] [2021-11-19 13:30:31,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:31,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:30:31,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:31,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:30:31,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:30:31,339 INFO L87 Difference]: Start difference. First operand has 304 states, 301 states have (on average 2.681063122923588) internal successors, (807), 303 states have internal predecessors, (807), 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, 3 states have (on average 2.0) internal successors, (6), 2 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) [2021-11-19 13:30:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:31,536 INFO L93 Difference]: Finished difference Result 456 states and 1169 transitions. [2021-11-19 13:30:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:30:31,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 13:30:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:31,580 INFO L225 Difference]: With dead ends: 456 [2021-11-19 13:30:31,581 INFO L226 Difference]: Without dead ends: 434 [2021-11-19 13:30:31,582 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:30:31,590 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:31,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-19 13:30:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 410. [2021-11-19 13:30:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 406 states have (on average 2.6773399014778323) internal successors, (1087), 409 states have internal predecessors, (1087), 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) [2021-11-19 13:30:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1087 transitions. [2021-11-19 13:30:31,715 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1087 transitions. Word has length 6 [2021-11-19 13:30:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:31,716 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1087 transitions. [2021-11-19 13:30:31,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2021-11-19 13:30:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1087 transitions. [2021-11-19 13:30:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 13:30:31,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:31,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:31,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:30:31,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:31,721 INFO L85 PathProgramCache]: Analyzing trace with hash -122722266, now seen corresponding path program 1 times [2021-11-19 13:30:31,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:31,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686103673] [2021-11-19 13:30:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:31,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:31,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:31,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686103673] [2021-11-19 13:30:31,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686103673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:31,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:31,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:30:31,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951543131] [2021-11-19 13:30:31,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:31,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:30:31,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:30:31,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:30:31,816 INFO L87 Difference]: Start difference. First operand 410 states and 1087 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:31,934 INFO L93 Difference]: Finished difference Result 452 states and 1195 transitions. [2021-11-19 13:30:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:30:31,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-19 13:30:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:31,941 INFO L225 Difference]: With dead ends: 452 [2021-11-19 13:30:31,942 INFO L226 Difference]: Without dead ends: 452 [2021-11-19 13:30:31,942 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:30:31,945 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:31,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 4 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-19 13:30:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-11-19 13:30:31,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 448 states have (on average 2.6674107142857144) internal successors, (1195), 451 states have internal predecessors, (1195), 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) [2021-11-19 13:30:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1195 transitions. [2021-11-19 13:30:31,983 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1195 transitions. Word has length 10 [2021-11-19 13:30:31,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:31,984 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1195 transitions. [2021-11-19 13:30:31,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1195 transitions. [2021-11-19 13:30:31,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 13:30:31,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:31,987 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:31,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:30:31,988 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:31,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:31,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1000775458, now seen corresponding path program 1 times [2021-11-19 13:30:31,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:31,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827038268] [2021-11-19 13:30:31,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:31,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:32,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:32,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827038268] [2021-11-19 13:30:32,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827038268] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:32,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919369610] [2021-11-19 13:30:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:32,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:32,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:32,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:30:32,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:30:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:32,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:30:32,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:32,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:32,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919369610] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:30:32,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1024920389] [2021-11-19 13:30:32,507 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-19 13:30:32,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:30:32,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2021-11-19 13:30:32,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643280125] [2021-11-19 13:30:32,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:30:32,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:30:32,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:32,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:30:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:30:32,514 INFO L87 Difference]: Start difference. First operand 452 states and 1195 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 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) [2021-11-19 13:30:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:33,077 INFO L93 Difference]: Finished difference Result 1108 states and 2838 transitions. [2021-11-19 13:30:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:30:33,078 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 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 [2021-11-19 13:30:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:33,091 INFO L225 Difference]: With dead ends: 1108 [2021-11-19 13:30:33,091 INFO L226 Difference]: Without dead ends: 1080 [2021-11-19 13:30:33,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:30:33,093 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 171 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:33,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 0 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:30:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-19 13:30:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 734. [2021-11-19 13:30:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 730 states have (on average 2.691780821917808) internal successors, (1965), 733 states have internal predecessors, (1965), 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) [2021-11-19 13:30:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1965 transitions. [2021-11-19 13:30:33,143 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1965 transitions. Word has length 13 [2021-11-19 13:30:33,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:33,143 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1965 transitions. [2021-11-19 13:30:33,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 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) [2021-11-19 13:30:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1965 transitions. [2021-11-19 13:30:33,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 13:30:33,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:33,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:33,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:33,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-19 13:30:33,373 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:33,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:33,374 INFO L85 PathProgramCache]: Analyzing trace with hash -294380294, now seen corresponding path program 1 times [2021-11-19 13:30:33,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:33,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885940825] [2021-11-19 13:30:33,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:33,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:33,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:33,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885940825] [2021-11-19 13:30:33,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885940825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:33,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:33,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:30:33,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55766105] [2021-11-19 13:30:33,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:33,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:30:33,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:33,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:30:33,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:30:33,515 INFO L87 Difference]: Start difference. First operand 734 states and 1965 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:33,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:33,620 INFO L93 Difference]: Finished difference Result 310 states and 698 transitions. [2021-11-19 13:30:33,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:30:33,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-19 13:30:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:33,624 INFO L225 Difference]: With dead ends: 310 [2021-11-19 13:30:33,625 INFO L226 Difference]: Without dead ends: 306 [2021-11-19 13:30:33,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:30:33,627 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:33,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 2 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-19 13:30:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 282. [2021-11-19 13:30:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 2.2642857142857142) internal successors, (634), 281 states have internal predecessors, (634), 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) [2021-11-19 13:30:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 634 transitions. [2021-11-19 13:30:33,642 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 634 transitions. Word has length 16 [2021-11-19 13:30:33,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:33,643 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 634 transitions. [2021-11-19 13:30:33,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:33,644 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 634 transitions. [2021-11-19 13:30:33,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 13:30:33,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:33,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:33,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:30:33,646 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:33,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:33,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1449650952, now seen corresponding path program 1 times [2021-11-19 13:30:33,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:33,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897328436] [2021-11-19 13:30:33,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:33,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:33,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:33,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:33,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897328436] [2021-11-19 13:30:33,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897328436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:33,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:33,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:30:33,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581442070] [2021-11-19 13:30:33,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:33,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:30:33,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:33,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:30:33,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:30:33,711 INFO L87 Difference]: Start difference. First operand 282 states and 634 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-11-19 13:30:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:33,812 INFO L93 Difference]: Finished difference Result 342 states and 763 transitions. [2021-11-19 13:30:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:30:33,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 17 [2021-11-19 13:30:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:33,817 INFO L225 Difference]: With dead ends: 342 [2021-11-19 13:30:33,817 INFO L226 Difference]: Without dead ends: 340 [2021-11-19 13:30:33,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:30:33,819 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:33,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 1 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-19 13:30:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 282. [2021-11-19 13:30:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 2.2714285714285714) internal successors, (636), 281 states have internal predecessors, (636), 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) [2021-11-19 13:30:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 636 transitions. [2021-11-19 13:30:33,833 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 636 transitions. Word has length 17 [2021-11-19 13:30:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:33,834 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 636 transitions. [2021-11-19 13:30:33,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-11-19 13:30:33,835 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 636 transitions. [2021-11-19 13:30:33,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 13:30:33,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:33,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:33,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:30:33,837 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:33,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:33,838 INFO L85 PathProgramCache]: Analyzing trace with hash 50627632, now seen corresponding path program 1 times [2021-11-19 13:30:33,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:33,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149074053] [2021-11-19 13:30:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:33,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:34,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:34,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149074053] [2021-11-19 13:30:34,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149074053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:34,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:34,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:30:34,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279124444] [2021-11-19 13:30:34,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:34,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:30:34,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:34,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:30:34,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:30:34,353 INFO L87 Difference]: Start difference. First operand 282 states and 636 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:35,181 INFO L93 Difference]: Finished difference Result 479 states and 1056 transitions. [2021-11-19 13:30:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:30:35,182 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-19 13:30:35,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:35,186 INFO L225 Difference]: With dead ends: 479 [2021-11-19 13:30:35,186 INFO L226 Difference]: Without dead ends: 434 [2021-11-19 13:30:35,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:30:35,188 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 120 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:35,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 20 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:30:35,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-19 13:30:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 336. [2021-11-19 13:30:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 334 states have (on average 2.2964071856287425) internal successors, (767), 335 states have internal predecessors, (767), 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) [2021-11-19 13:30:35,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 767 transitions. [2021-11-19 13:30:35,208 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 767 transitions. Word has length 21 [2021-11-19 13:30:35,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:35,209 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 767 transitions. [2021-11-19 13:30:35,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:35,209 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 767 transitions. [2021-11-19 13:30:35,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 13:30:35,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:35,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:35,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:30:35,212 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:35,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1996967548, now seen corresponding path program 2 times [2021-11-19 13:30:35,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:35,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493213971] [2021-11-19 13:30:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:35,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:36,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:36,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493213971] [2021-11-19 13:30:36,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493213971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:36,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:36,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:30:36,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742640019] [2021-11-19 13:30:36,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:36,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:30:36,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:36,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:30:36,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:30:36,266 INFO L87 Difference]: Start difference. First operand 336 states and 767 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:37,939 INFO L93 Difference]: Finished difference Result 502 states and 1110 transitions. [2021-11-19 13:30:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:30:37,940 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-19 13:30:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:37,948 INFO L225 Difference]: With dead ends: 502 [2021-11-19 13:30:37,948 INFO L226 Difference]: Without dead ends: 456 [2021-11-19 13:30:37,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:30:37,950 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 114 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:37,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 12 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:30:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-19 13:30:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 324. [2021-11-19 13:30:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 322 states have (on average 2.282608695652174) internal successors, (735), 323 states have internal predecessors, (735), 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) [2021-11-19 13:30:37,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 735 transitions. [2021-11-19 13:30:37,993 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 735 transitions. Word has length 21 [2021-11-19 13:30:37,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:37,994 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 735 transitions. [2021-11-19 13:30:37,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:37,994 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 735 transitions. [2021-11-19 13:30:37,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:30:37,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:37,996 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:37,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 13:30:37,997 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:38,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:38,001 INFO L85 PathProgramCache]: Analyzing trace with hash 715495023, now seen corresponding path program 1 times [2021-11-19 13:30:38,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:38,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28107861] [2021-11-19 13:30:38,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:38,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:38,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:38,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28107861] [2021-11-19 13:30:38,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28107861] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:38,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913122322] [2021-11-19 13:30:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:38,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:38,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:38,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:30:38,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 13:30:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:38,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:30:38,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:30:38,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:30:38,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913122322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:38,478 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:30:38,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2021-11-19 13:30:38,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867256873] [2021-11-19 13:30:38,479 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:38,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:30:38,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:38,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:30:38,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:30:38,481 INFO L87 Difference]: Start difference. First operand 324 states and 735 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 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) [2021-11-19 13:30:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:38,842 INFO L93 Difference]: Finished difference Result 478 states and 1038 transitions. [2021-11-19 13:30:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:30:38,843 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 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 24 [2021-11-19 13:30:38,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:38,848 INFO L225 Difference]: With dead ends: 478 [2021-11-19 13:30:38,849 INFO L226 Difference]: Without dead ends: 466 [2021-11-19 13:30:38,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:30:38,852 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 150 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:38,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 0 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:30:38,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-19 13:30:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 378. [2021-11-19 13:30:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 376 states have (on average 2.25) internal successors, (846), 377 states have internal predecessors, (846), 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) [2021-11-19 13:30:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 846 transitions. [2021-11-19 13:30:38,871 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 846 transitions. Word has length 24 [2021-11-19 13:30:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:38,871 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 846 transitions. [2021-11-19 13:30:38,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 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) [2021-11-19 13:30:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 846 transitions. [2021-11-19 13:30:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:30:38,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:38,874 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-11-19 13:30:38,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:39,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:39,101 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash -232258018, now seen corresponding path program 2 times [2021-11-19 13:30:39,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:39,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96419259] [2021-11-19 13:30:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:39,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:39,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:39,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96419259] [2021-11-19 13:30:39,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96419259] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:39,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395250180] [2021-11-19 13:30:39,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:30:39,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:39,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:39,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:30:39,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 13:30:39,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-19 13:30:39,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:30:39,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:30:39,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:39,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:39,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:39,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395250180] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:30:39,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1146007422] [2021-11-19 13:30:39,692 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-19 13:30:39,695 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:30:39,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2021-11-19 13:30:39,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708799577] [2021-11-19 13:30:39,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:30:39,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:30:39,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:30:39,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:30:39,698 INFO L87 Difference]: Start difference. First operand 378 states and 846 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 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) [2021-11-19 13:30:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:40,241 INFO L93 Difference]: Finished difference Result 880 states and 1887 transitions. [2021-11-19 13:30:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:30:40,242 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 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 27 [2021-11-19 13:30:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:40,253 INFO L225 Difference]: With dead ends: 880 [2021-11-19 13:30:40,254 INFO L226 Difference]: Without dead ends: 880 [2021-11-19 13:30:40,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:30:40,256 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 236 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:40,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 0 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:30:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-11-19 13:30:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 602. [2021-11-19 13:30:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 600 states have (on average 2.27) internal successors, (1362), 601 states have internal predecessors, (1362), 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) [2021-11-19 13:30:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1362 transitions. [2021-11-19 13:30:40,290 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1362 transitions. Word has length 27 [2021-11-19 13:30:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:40,290 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1362 transitions. [2021-11-19 13:30:40,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 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) [2021-11-19 13:30:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1362 transitions. [2021-11-19 13:30:40,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 13:30:40,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:40,293 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:40,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-19 13:30:40,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:40,512 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:40,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:40,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1554545898, now seen corresponding path program 3 times [2021-11-19 13:30:40,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:40,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710543476] [2021-11-19 13:30:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:40,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:30:40,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:40,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710543476] [2021-11-19 13:30:40,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710543476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:40,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:40,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:30:40,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888955636] [2021-11-19 13:30:40,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:40,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:30:40,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:30:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:30:40,957 INFO L87 Difference]: Start difference. First operand 602 states and 1362 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:42,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:42,481 INFO L93 Difference]: Finished difference Result 1215 states and 2713 transitions. [2021-11-19 13:30:42,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 13:30:42,482 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-19 13:30:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:42,493 INFO L225 Difference]: With dead ends: 1215 [2021-11-19 13:30:42,494 INFO L226 Difference]: Without dead ends: 1183 [2021-11-19 13:30:42,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2021-11-19 13:30:42,496 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:42,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:30:42,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-11-19 13:30:42,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 722. [2021-11-19 13:30:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 720 states have (on average 2.370833333333333) internal successors, (1707), 721 states have internal predecessors, (1707), 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) [2021-11-19 13:30:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1707 transitions. [2021-11-19 13:30:42,536 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1707 transitions. Word has length 28 [2021-11-19 13:30:42,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:42,536 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 1707 transitions. [2021-11-19 13:30:42,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1707 transitions. [2021-11-19 13:30:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 13:30:42,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:42,539 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:42,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 13:30:42,540 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:42,540 INFO L85 PathProgramCache]: Analyzing trace with hash -244043574, now seen corresponding path program 4 times [2021-11-19 13:30:42,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:42,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063209158] [2021-11-19 13:30:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:42,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:30:43,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:43,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063209158] [2021-11-19 13:30:43,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063209158] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:43,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756362125] [2021-11-19 13:30:43,032 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 13:30:43,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:43,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:43,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:30:43,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 13:30:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:43,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-19 13:30:43,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:43,241 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-19 13:30:43,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 13:30:43,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 70 treesize of output 66 [2021-11-19 13:30:44,224 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-19 13:30:44,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 59 treesize of output 40 [2021-11-19 13:30:44,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 45 [2021-11-19 13:31:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:21,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:45,646 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre48#1_44| Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_44|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2021-11-19 13:31:45,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2021-11-19 13:31:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 2 times theorem prover too weak. 1 trivial. 1 not checked. [2021-11-19 13:31:49,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756362125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:49,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [817823160] [2021-11-19 13:31:49,480 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-19 13:31:49,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:31:49,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 41 [2021-11-19 13:31:49,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008754641] [2021-11-19 13:31:49,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:31:49,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-19 13:31:49,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-19 13:31:49,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1549, Unknown=30, NotChecked=80, Total=1806 [2021-11-19 13:31:49,484 INFO L87 Difference]: Start difference. First operand 722 states and 1707 transitions. Second operand has 43 states, 42 states have (on average 2.0) internal successors, (84), 42 states have internal predecessors, (84), 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) [2021-11-19 13:32:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:14,893 INFO L93 Difference]: Finished difference Result 1545 states and 3359 transitions. [2021-11-19 13:32:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-19 13:32:14,898 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.0) internal successors, (84), 42 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-19 13:32:14,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:14,913 INFO L225 Difference]: With dead ends: 1545 [2021-11-19 13:32:14,913 INFO L226 Difference]: Without dead ends: 1539 [2021-11-19 13:32:14,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2722 ImplicationChecksByTransitivity, 85.8s TimeCoverageRelationStatistics Valid=1183, Invalid=8492, Unknown=31, NotChecked=194, Total=9900 [2021-11-19 13:32:14,918 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 725 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 3761 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 4608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 683 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:14,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 4 Invalid, 4608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3761 Invalid, 0 Unknown, 683 Unchecked, 4.5s Time] [2021-11-19 13:32:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2021-11-19 13:32:14,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 839. [2021-11-19 13:32:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 837 states have (on average 2.3978494623655915) internal successors, (2007), 838 states have internal predecessors, (2007), 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) [2021-11-19 13:32:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 2007 transitions. [2021-11-19 13:32:14,967 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 2007 transitions. Word has length 28 [2021-11-19 13:32:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:14,968 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 2007 transitions. [2021-11-19 13:32:14,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.0) internal successors, (84), 42 states have internal predecessors, (84), 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) [2021-11-19 13:32:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 2007 transitions. [2021-11-19 13:32:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:32:14,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:14,971 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:15,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:32:15,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:32:15,196 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:32:15,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1024583047, now seen corresponding path program 1 times [2021-11-19 13:32:15,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:15,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47573636] [2021-11-19 13:32:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:15,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:32:15,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:15,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47573636] [2021-11-19 13:32:15,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47573636] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:32:15,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482440403] [2021-11-19 13:32:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:15,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:32:15,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:32:15,828 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:32:15,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 13:32:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:15,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-19 13:32:15,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:16,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 70 treesize of output 66 [2021-11-19 13:32:17,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:32:17,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 55 treesize of output 36 [2021-11-19 13:32:17,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 45 [2021-11-19 13:32:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:53,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:55,866 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.base| Int) (|v_ULTIMATE.start_main_#t~pre48#1_46| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base|) |c_ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296)))) is different from false [2021-11-19 13:32:57,911 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.base| Int) (|v_ULTIMATE.start_main_#t~pre48#1_46| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base|) |c_ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 4))) 4294967296)))) is different from false [2021-11-19 13:32:59,927 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.base| Int) (|v_ULTIMATE.start_main_#t~pre48#1_46| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base|) |c_ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296)))) is different from false [2021-11-19 13:32:59,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2021-11-19 13:33:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-19 13:33:00,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482440403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:33:00,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [690133964] [2021-11-19 13:33:00,541 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-19 13:33:00,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:33:00,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 43 [2021-11-19 13:33:00,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716773677] [2021-11-19 13:33:00,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:33:00,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-19 13:33:00,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-19 13:33:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1578, Unknown=20, NotChecked=246, Total=1980 [2021-11-19 13:33:00,545 INFO L87 Difference]: Start difference. First operand 839 states and 2007 transitions. Second operand has 45 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 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) [2021-11-19 13:33:03,614 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| |c_~#arr~0.base|)) (.cse4 (* c_~top~0 4))) (let ((.cse1 (select .cse3 .cse4)) (.cse2 (select .cse3 (+ |c_~#arr~0.offset| .cse4))) (.cse0 (select .cse3 (+ .cse4 (- 4))))) (and (<= c_~top~0 |c_t1Thread1of1ForFork1_push_#t~ret35#1|) (not (= |c_t1Thread1of1ForFork1_push_~stack#1.base| |c_ULTIMATE.start_main_~#id2~0#1.base|)) (= |c_t1Thread1of1ForFork1_push_~stack#1.base| |c_~#arr~0.base|) (= |c_ULTIMATE.start_main_~#id2~0#1.offset| 0) (< (div |c_t1Thread1of1ForFork1_push_~x#1| (- 4294967296)) (+ (div (+ 399 (* |c_t1Thread1of1ForFork1_push_~x#1| (- 1))) 4294967296) 1)) (<= .cse0 399) (<= |c_t1Thread1of1ForFork1_push_#t~ret35#1| c_~top~0) (<= .cse1 399) (= |c_~#arr~0.offset| 0) (<= 0 |c_t1Thread1of1ForFork1_push_~x#1|) (= |c_t1Thread1of1ForFork1_push_#t~ret35#1| c_~top~0) (< (div .cse2 (- 4294967296)) (+ (div (+ 399 (* .cse2 (- 1))) 4294967296) 1)) (forall ((|ULTIMATE.start_main_~#id2~0#1.base| Int) (|v_ULTIMATE.start_main_#t~pre48#1_46| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base|) |c_ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296)))) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (= c_~top~0 1) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork1_push_~stack#1.offset|) (< .cse2 4294967296) (<= 0 .cse1) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (<= |c_t1Thread1of1ForFork1_push_~x#1| 399) (<= 0 .cse2) (< |c_t1Thread1of1ForFork1_push_~x#1| 4294967296) (not (= |c_ULTIMATE.start_main_~#id1~0#1.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork1_push_~stack#1.offset| 0) (<= 0 .cse0)))) is different from false [2021-11-19 13:33:05,232 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_~#arr~0.base|)) (.cse3 (* |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 4))) (let ((.cse1 (select .cse2 .cse3)) (.cse0 (select .cse2 (+ |c_~#arr~0.offset| .cse3)))) (and (< (div .cse0 (- 4294967296)) (+ (div (+ (* .cse0 (- 1)) 399) 4294967296) 1)) (< .cse0 4294967296) (= |c_ULTIMATE.start_main_~#id2~0#1.offset| 0) (<= 0 .cse1) (= |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 1) (= |c_~#arr~0.offset| 0) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (<= .cse1 399) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (forall ((|ULTIMATE.start_main_~#id2~0#1.base| Int) (|v_ULTIMATE.start_main_#t~pre48#1_46| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base|) |c_ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 4))) 4294967296)))) (not (= |c_ULTIMATE.start_main_~#id1~0#1.base| |c_~#arr~0.base|)) (<= 0 .cse0)))) is different from false [2021-11-19 13:33:06,872 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_~#arr~0.base|))) (let ((.cse0 (select .cse2 (+ |c_~#arr~0.offset| 4))) (.cse1 (select .cse2 (+ (* c_~top~0 4) (- 4))))) (and (< .cse0 4294967296) (= |c_ULTIMATE.start_main_~#id2~0#1.offset| 0) (<= .cse1 399) (< (div .cse0 (- 4294967296)) (+ (div (+ (* .cse0 (- 1)) 399) 4294967296) 1)) (= |c_~#arr~0.offset| 0) (= c_~top~0 2) (<= 0 .cse0) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (forall ((|ULTIMATE.start_main_~#id2~0#1.base| Int) (|v_ULTIMATE.start_main_#t~pre48#1_46| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base|) |c_ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296)))) (not (= |c_ULTIMATE.start_main_~#id1~0#1.base| |c_~#arr~0.base|)) (<= 0 .cse1)))) is different from false [2021-11-19 13:33:09,988 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_~#arr~0.offset| (* 4 c_~top~0))) (.cse1 (select (select |c_#memory_int| |c_~#arr~0.base|) (* c_~top~0 4)))) (and (not (= 4294967294 (mod |c_t1Thread1of1ForFork1_push_~x#1| 4294967296))) (<= c_~top~0 |c_t1Thread1of1ForFork1_push_#t~ret35#1|) (not (= |c_t1Thread1of1ForFork1_push_~stack#1.base| |c_ULTIMATE.start_main_~#id2~0#1.base|)) (= .cse0 (+ |c_t1Thread1of1ForFork1_push_~stack#1.offset| (* 4 |c_t1Thread1of1ForFork1_push_#t~ret35#1|))) (= |c_t1Thread1of1ForFork1_push_~stack#1.base| |c_~#arr~0.base|) (<= |c_t1Thread1of1ForFork1_push_#t~ret35#1| c_~top~0) (<= .cse1 399) (= |c_~#arr~0.offset| 0) (<= 0 |c_t1Thread1of1ForFork1_push_~x#1|) (forall ((|ULTIMATE.start_main_~#id2~0#1.base| Int) (|v_ULTIMATE.start_main_#t~pre48#1_46| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base|) |c_ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296)))) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork1_push_~stack#1.offset|) (not (= .cse0 |c_ULTIMATE.start_main_~#id2~0#1.offset|)) (<= 0 .cse1) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (<= |c_t1Thread1of1ForFork1_push_~x#1| 399) (not (= |c_ULTIMATE.start_main_~#id1~0#1.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork1_push_~stack#1.offset| 0))) is different from false [2021-11-19 13:33:12,282 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_~#arr~0.base|) (* |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 4)))) (and (<= 0 .cse0) (= |c_~#arr~0.offset| 0) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (<= .cse0 399) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (forall ((|ULTIMATE.start_main_~#id2~0#1.base| Int) (|v_ULTIMATE.start_main_#t~pre48#1_46| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base|) |c_ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 4))) 4294967296)))) (not (= |c_ULTIMATE.start_main_~#id1~0#1.base| |c_~#arr~0.base|)))) is different from false [2021-11-19 13:33:14,582 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_~#arr~0.base|) (+ (* c_~top~0 4) (- 4))))) (and (<= .cse0 399) (= |c_~#arr~0.offset| 0) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (forall ((|ULTIMATE.start_main_~#id2~0#1.base| Int) (|v_ULTIMATE.start_main_#t~pre48#1_46| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~#id2~0#1.base|) |c_ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296)))) (not (= |c_ULTIMATE.start_main_~#id1~0#1.base| |c_~#arr~0.base|)) (<= 0 .cse0))) is different from false [2021-11-19 13:33:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:19,916 INFO L93 Difference]: Finished difference Result 1819 states and 4105 transitions. [2021-11-19 13:33:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-19 13:33:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 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 29 [2021-11-19 13:33:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:19,934 INFO L225 Difference]: With dead ends: 1819 [2021-11-19 13:33:19,934 INFO L226 Difference]: Without dead ends: 1819 [2021-11-19 13:33:19,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1402 ImplicationChecksByTransitivity, 59.0s TimeCoverageRelationStatistics Valid=630, Invalid=5860, Unknown=26, NotChecked=1494, Total=8010 [2021-11-19 13:33:19,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 414 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 5459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1553 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:19,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 3 Invalid, 5459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3836 Invalid, 0 Unknown, 1553 Unchecked, 3.4s Time] [2021-11-19 13:33:19,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-11-19 13:33:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 877. [2021-11-19 13:33:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 2.4137142857142857) internal successors, (2112), 876 states have internal predecessors, (2112), 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) [2021-11-19 13:33:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 2112 transitions. [2021-11-19 13:33:19,994 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 2112 transitions. Word has length 29 [2021-11-19 13:33:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:19,994 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 2112 transitions. [2021-11-19 13:33:19,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 44 states have internal predecessors, (87), 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) [2021-11-19 13:33:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 2112 transitions. [2021-11-19 13:33:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:33:19,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:19,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:20,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:20,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:33:20,208 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:33:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1024583605, now seen corresponding path program 1 times [2021-11-19 13:33:20,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:20,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125695462] [2021-11-19 13:33:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:20,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:20,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:20,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125695462] [2021-11-19 13:33:20,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125695462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:33:20,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169423699] [2021-11-19 13:33:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:20,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:33:20,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:33:20,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:33:20,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 13:33:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:20,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:33:20,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:20,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:20,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169423699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:33:20,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1482520559] [2021-11-19 13:33:20,668 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-19 13:33:20,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:33:20,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-19 13:33:20,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910129222] [2021-11-19 13:33:20,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:33:20,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:33:20,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:20,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:33:20,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:33:20,671 INFO L87 Difference]: Start difference. First operand 877 states and 2112 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2021-11-19 13:33:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:20,929 INFO L93 Difference]: Finished difference Result 1777 states and 3821 transitions. [2021-11-19 13:33:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:33:20,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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 29 [2021-11-19 13:33:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:20,945 INFO L225 Difference]: With dead ends: 1777 [2021-11-19 13:33:20,945 INFO L226 Difference]: Without dead ends: 1777 [2021-11-19 13:33:20,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:33:20,946 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 213 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:20,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 13 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:33:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2021-11-19 13:33:20,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1232. [2021-11-19 13:33:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1229 states have (on average 2.3458096013018714) internal successors, (2883), 1231 states have internal predecessors, (2883), 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) [2021-11-19 13:33:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 2883 transitions. [2021-11-19 13:33:21,006 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 2883 transitions. Word has length 29 [2021-11-19 13:33:21,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:21,006 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 2883 transitions. [2021-11-19 13:33:21,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2021-11-19 13:33:21,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 2883 transitions. [2021-11-19 13:33:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:33:21,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:21,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:21,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:21,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-19 13:33:21,232 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:33:21,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:21,233 INFO L85 PathProgramCache]: Analyzing trace with hash 343563297, now seen corresponding path program 2 times [2021-11-19 13:33:21,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:21,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174272609] [2021-11-19 13:33:21,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:21,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:33:21,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:21,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174272609] [2021-11-19 13:33:21,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174272609] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:33:21,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525781413] [2021-11-19 13:33:21,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:33:21,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:33:21,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:33:21,752 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:33:21,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 13:33:21,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-19 13:33:21,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:33:21,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-19 13:33:21,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:21,864 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:33:21,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 27 [2021-11-19 13:33:22,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 70 treesize of output 66 [2021-11-19 13:33:22,389 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-19 13:33:22,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 67 treesize of output 42 [2021-11-19 13:33:22,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 45 [2021-11-19 13:33:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:33:42,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:08,076 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre48#1_49| Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_49|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2021-11-19 13:34:08,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2021-11-19 13:34:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2021-11-19 13:34:08,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525781413] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:08,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1136449421] [2021-11-19 13:34:08,373 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-19 13:34:08,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:34:08,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 38 [2021-11-19 13:34:08,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136856411] [2021-11-19 13:34:08,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:34:08,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-19 13:34:08,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-19 13:34:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1338, Unknown=15, NotChecked=74, Total=1560 [2021-11-19 13:34:08,378 INFO L87 Difference]: Start difference. First operand 1232 states and 2883 transitions. Second operand has 40 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 39 states have internal predecessors, (77), 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) [2021-11-19 13:34:14,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:14,986 INFO L93 Difference]: Finished difference Result 1620 states and 3687 transitions. [2021-11-19 13:34:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:34:14,987 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 39 states have internal predecessors, (77), 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 29 [2021-11-19 13:34:14,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:14,999 INFO L225 Difference]: With dead ends: 1620 [2021-11-19 13:34:14,999 INFO L226 Difference]: Without dead ends: 1620 [2021-11-19 13:34:15,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=329, Invalid=2312, Unknown=15, NotChecked=100, Total=2756 [2021-11-19 13:34:15,002 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 278 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 240 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:15,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 9 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1197 Invalid, 0 Unknown, 240 Unchecked, 1.3s Time] [2021-11-19 13:34:15,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2021-11-19 13:34:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1176. [2021-11-19 13:34:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1173 states have (on average 2.337595907928389) internal successors, (2742), 1175 states have internal predecessors, (2742), 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) [2021-11-19 13:34:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 2742 transitions. [2021-11-19 13:34:15,055 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 2742 transitions. Word has length 29 [2021-11-19 13:34:15,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:15,055 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 2742 transitions. [2021-11-19 13:34:15,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 39 states have internal predecessors, (77), 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) [2021-11-19 13:34:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 2742 transitions. [2021-11-19 13:34:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:34:15,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:15,058 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:15,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:15,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-19 13:34:15,277 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:34:15,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1128988441, now seen corresponding path program 1 times [2021-11-19 13:34:15,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:15,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310830474] [2021-11-19 13:34:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:15,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:16,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:16,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310830474] [2021-11-19 13:34:16,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310830474] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:16,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273579705] [2021-11-19 13:34:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:16,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:16,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:16,519 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:16,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 13:34:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:16,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-19 13:34:16,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:16,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 70 treesize of output 66 [2021-11-19 13:34:17,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:34:17,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 51 treesize of output 38 [2021-11-19 13:34:18,999 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-19 13:34:19,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 93 treesize of output 56 [2021-11-19 13:35:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:01,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:56,550 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:35:56,569 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:56,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 44 [2021-11-19 13:35:56,582 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:56,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 48 [2021-11-19 13:35:56,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 4 [2021-11-19 13:35:56,632 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:56,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 68 [2021-11-19 13:35:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:57,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273579705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:57,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [274787159] [2021-11-19 13:35:57,330 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-19 13:35:57,331 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:35:57,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 19] total 60 [2021-11-19 13:35:57,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040543848] [2021-11-19 13:35:57,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:57,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-19 13:35:57,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:57,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-19 13:35:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=3355, Unknown=44, NotChecked=0, Total=3782 [2021-11-19 13:35:57,335 INFO L87 Difference]: Start difference. First operand 1176 states and 2742 transitions. Second operand has 62 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 61 states have internal predecessors, (102), 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) [2021-11-19 13:36:46,077 WARN L227 SmtUtils]: Spent 25.38s on a formula simplification. DAG size of input: 64 DAG size of output: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:36:48,605 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (* |c_t1Thread1of1ForFork1_push_~stack#1.offset| (- 1)))) (let ((.cse3 (div (+ |c_~#arr~0.offset| .cse4 (- 5)) (- 4))) (.cse2 (select (select |c_#memory_int| |c_~#arr~0.base|) |c_~#arr~0.offset|)) (.cse1 (div (+ |c_~#arr~0.offset| (- 4) .cse4) (- 4))) (.cse0 (<= (+ c_~top~0 1) 0))) (and (or .cse0 (<= (+ .cse1 |c_t1Thread1of1ForFork1_push_#t~ret35#1|) 1)) (= |c_~#arr~0.offset| 0) (<= 0 .cse2) (or (= |c_t1Thread1of1ForFork1_push_~stack#1.base| |c_~#arr~0.base|) .cse0) (<= c_~top~0 1) (or (<= 2 .cse3) .cse0) (or (<= (+ c_~top~0 2) (+ |c_t1Thread1of1ForFork1_push_#t~ret35#1| .cse3)) .cse0) (or (not (= (mod (+ |c_t1Thread1of1ForFork1_push_~x#1| 2) 4294967296) 0)) .cse0) (< (div .cse2 (- 4294967296)) (+ (div (+ (* .cse2 (- 1)) 399) 4294967296) 1)) (forall ((|t1Thread1of1ForFork1_push_~x#1| Int) (v_~top~0_246 Int)) (or (not (= 4294967294 (mod (select (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) 4) |t1Thread1of1ForFork1_push_~x#1|) (+ |c_~#arr~0.offset| (* v_~top~0_246 4) (- 4))) 4294967296))) (<= v_~top~0_246 0) (< (+ c_~top~0 1) v_~top~0_246))) (< .cse2 4294967296) (or (<= (+ .cse1 c_~top~0) 1) .cse0)))) is different from false [2021-11-19 13:37:57,171 WARN L227 SmtUtils]: Spent 20.09s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:38:29,704 WARN L227 SmtUtils]: Spent 18.03s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:39:28,720 WARN L227 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 62 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:39:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:35,233 INFO L93 Difference]: Finished difference Result 2399 states and 5337 transitions. [2021-11-19 13:39:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-19 13:39:35,234 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 61 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-19 13:39:35,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:35,252 INFO L225 Difference]: With dead ends: 2399 [2021-11-19 13:39:35,253 INFO L226 Difference]: Without dead ends: 2399 [2021-11-19 13:39:35,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 120 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 313.6s TimeCoverageRelationStatistics Valid=1650, Invalid=12786, Unknown=88, NotChecked=238, Total=14762 [2021-11-19 13:39:35,266 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 486 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 5356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2224 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:35,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 3 Invalid, 5356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3037 Invalid, 0 Unknown, 2224 Unchecked, 3.5s Time] [2021-11-19 13:39:35,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-11-19 13:39:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 1703. [2021-11-19 13:39:35,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1700 states have (on average 2.3517647058823528) internal successors, (3998), 1702 states have internal predecessors, (3998), 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) [2021-11-19 13:39:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 3998 transitions. [2021-11-19 13:39:35,381 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 3998 transitions. Word has length 36 [2021-11-19 13:39:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:35,382 INFO L470 AbstractCegarLoop]: Abstraction has 1703 states and 3998 transitions. [2021-11-19 13:39:35,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 61 states have internal predecessors, (102), 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) [2021-11-19 13:39:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 3998 transitions. [2021-11-19 13:39:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:39:35,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:35,386 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:35,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:35,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:39:35,600 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:39:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1051983685, now seen corresponding path program 2 times [2021-11-19 13:39:35,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:39:35,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586763986] [2021-11-19 13:39:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:35,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:39:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:36,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:39:36,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586763986] [2021-11-19 13:39:36,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586763986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:39:36,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653560247] [2021-11-19 13:39:36,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:39:36,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:39:36,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:39:36,599 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:39:36,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9695f33a-059e-451d-a82f-4464b3eceb1f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 13:39:36,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 13:39:36,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:39:36,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-19 13:39:36,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:36,821 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-19 13:39:36,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 13:39:37,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-11-19 13:39:37,221 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 13:39:37,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 30 treesize of output 25 [2021-11-19 13:39:37,566 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 13:39:37,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 36 treesize of output 31 [2021-11-19 13:39:38,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2021-11-19 13:39:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:38,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:17,935 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre48#1_51| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_51|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296)))) is different from false [2021-11-19 13:40:19,957 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre48#1_51| Int)) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_51|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 4))) 4294967296)))) is different from false [2021-11-19 13:40:21,971 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre48#1_51| Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre48#1_51|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2021-11-19 13:40:21,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2021-11-19 13:40:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-19 13:40:22,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653560247] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:22,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [299546366] [2021-11-19 13:40:22,328 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-19 13:40:22,329 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:40:22,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2021-11-19 13:40:22,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557176179] [2021-11-19 13:40:22,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:40:22,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-19 13:40:22,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:40:22,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-19 13:40:22,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2096, Unknown=5, NotChecked=282, Total=2550 [2021-11-19 13:40:22,332 INFO L87 Difference]: Start difference. First operand 1703 states and 3998 transitions. Second operand has 51 states, 50 states have (on average 2.0) internal successors, (100), 50 states have internal predecessors, (100), 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) [2021-11-19 13:41:31,892 WARN L227 SmtUtils]: Spent 12.97s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:41:33,996 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (not (= 4294967294 (mod |c_t1Thread1of1ForFork1_push_~x#1| 4294967296))) (= |c_t1Thread1of1ForFork1_push_~stack#1.base| |c_~#arr~0.base|) (= |c_~#arr~0.offset| 0) (= c_~top~0 2) (<= .cse0 399) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork1_push_~stack#1.offset|) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (<= 0 .cse0) (forall ((|t1Thread1of1ForFork1_push_~x#1| Int) (|v_t1Thread1of1ForFork1_push_#t~ret35#1_133| Int)) (or (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork1_push_~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_push_~stack#1.base|) (+ |c_t1Thread1of1ForFork1_push_~stack#1.offset| (* |v_t1Thread1of1ForFork1_push_#t~ret35#1_133| 4)) |t1Thread1of1ForFork1_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))) 4294967296))) (< |v_t1Thread1of1ForFork1_push_#t~ret35#1_133| c_~top~0))))) is different from false [2021-11-19 13:44:05,218 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)