./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan --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 9839125b5a4d74faffc5f8180766feb54b289091 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:33:35,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:33:35,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:33:35,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:33:35,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:33:35,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:33:35,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:33:35,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:33:35,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:33:35,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:33:35,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:33:35,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:33:35,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:33:35,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:33:35,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:33:35,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:33:35,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:33:35,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:33:35,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:33:35,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:33:35,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:33:35,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:33:35,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:33:35,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:33:35,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:33:35,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:33:35,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:33:35,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:33:35,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:33:35,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:33:35,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:33:35,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:33:35,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:33:35,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:33:35,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:33:35,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:33:35,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:33:35,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:33:35,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:33:35,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:33:35,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:33:35,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:33:35,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:33:35,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:33:35,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:33:35,877 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:33:35,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:33:35,878 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:33:35,878 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:33:35,878 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:33:35,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:33:35,879 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:33:35,880 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:33:35,880 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:33:35,880 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:33:35,880 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:33:35,881 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:33:35,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:33:35,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:33:35,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:33:35,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:33:35,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:33:35,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:33:35,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:33:35,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:33:35,883 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:33:35,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:33:35,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:33:35,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:33:35,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:33:35,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:33:35,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:33:35,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:33:35,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:33:35,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:33:35,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:33:35,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:33:35,888 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:33:35,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:33:35,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:33:35,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:33:35,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:33:35,889 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-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9839125b5a4d74faffc5f8180766feb54b289091 [2020-11-28 07:33:36,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:33:36,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:33:36,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:33:36,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:33:36,241 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:33:36,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe002_tso.opt.i [2020-11-28 07:33:36,326 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/data/f4f930936/220a6b07d8164a2ab780fea27b828593/FLAGcef78044c [2020-11-28 07:33:36,907 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:33:36,907 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/sv-benchmarks/c/pthread-wmm/safe002_tso.opt.i [2020-11-28 07:33:36,933 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/data/f4f930936/220a6b07d8164a2ab780fea27b828593/FLAGcef78044c [2020-11-28 07:33:37,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/data/f4f930936/220a6b07d8164a2ab780fea27b828593 [2020-11-28 07:33:37,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:33:37,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:33:37,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:37,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:33:37,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:33:37,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:37,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc4078c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37, skipping insertion in model container [2020-11-28 07:33:37,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:37,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:33:37,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:33:37,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:37,710 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:33:37,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:37,862 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:33:37,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37 WrapperNode [2020-11-28 07:33:37,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:37,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:37,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:33:37,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:33:37,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:37,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:37,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:37,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:33:37,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:33:37,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:33:37,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:37,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:37,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:37,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:37,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:37,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:38,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (1/1) ... [2020-11-28 07:33:38,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:33:38,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:33:38,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:33:38,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:33:38,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:33:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:33:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 07:33:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:33:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:33:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 07:33:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 07:33:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 07:33:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 07:33:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 07:33:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 07:33:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:33:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 07:33:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:33:38,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:33:38,097 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:33:38,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:33:38,645 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 07:33:38,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:38 BoogieIcfgContainer [2020-11-28 07:33:38,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:33:38,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:33:38,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:33:38,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:33:38,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:33:37" (1/3) ... [2020-11-28 07:33:38,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c84d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:38, skipping insertion in model container [2020-11-28 07:33:38,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:37" (2/3) ... [2020-11-28 07:33:38,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c84d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:38, skipping insertion in model container [2020-11-28 07:33:38,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:38" (3/3) ... [2020-11-28 07:33:38,656 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-11-28 07:33:38,666 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:33:38,666 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:33:38,671 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:33:38,672 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:33:38,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,705 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,705 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,705 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,706 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,706 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,707 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,707 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,708 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,709 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,710 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,711 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,711 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,714 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,714 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,714 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,715 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,722 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,722 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,722 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,723 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,726 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,726 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,726 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,726 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:38,731 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 07:33:38,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:33:38,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:33:38,776 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:33:38,777 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:33:38,777 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:33:38,777 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:33:38,777 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:33:38,777 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:33:38,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:33:38,792 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:33:38,794 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 07:33:38,797 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 07:33:38,799 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 07:33:38,858 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 07:33:38,858 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 07:33:38,862 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 07:33:38,867 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 07:33:41,137 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-28 07:33:41,250 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-28 07:33:41,251 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-28 07:33:41,256 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 07:33:41,282 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 07:33:41,284 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 07:33:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:33:41,290 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:41,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:41,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:41,296 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-28 07:33:41,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:41,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548273022] [2020-11-28 07:33:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:41,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548273022] [2020-11-28 07:33:41,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:41,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:33:41,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891195134] [2020-11-28 07:33:41,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:33:41,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:41,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:33:41,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:33:41,471 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 07:33:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:41,507 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 07:33:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:33:41,508 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:33:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:41,538 INFO L225 Difference]: With dead ends: 362 [2020-11-28 07:33:41,539 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 07:33:41,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:33:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 07:33:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 07:33:41,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 07:33:41,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 07:33:41,650 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 07:33:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:41,652 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 07:33:41,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:33:41,652 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 07:33:41,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:33:41,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:41,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:41,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:33:41,660 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:41,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-28 07:33:41,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:41,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220927610] [2020-11-28 07:33:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:41,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220927610] [2020-11-28 07:33:41,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:41,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:33:41,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708946994] [2020-11-28 07:33:41,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:41,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:41,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:41,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:41,898 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-28 07:33:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:41,953 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-28 07:33:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:41,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 07:33:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:41,962 INFO L225 Difference]: With dead ends: 330 [2020-11-28 07:33:41,962 INFO L226 Difference]: Without dead ends: 266 [2020-11-28 07:33:41,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:41,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-28 07:33:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-28 07:33:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-28 07:33:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-28 07:33:41,989 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-28 07:33:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:41,990 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-28 07:33:41,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-28 07:33:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:33:41,993 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:41,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:41,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:33:41,993 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:41,999 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-11-28 07:33:41,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:41,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454034990] [2020-11-28 07:33:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:42,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454034990] [2020-11-28 07:33:42,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:42,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:42,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142860603] [2020-11-28 07:33:42,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:42,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:42,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:42,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:42,137 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-11-28 07:33:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:42,254 INFO L93 Difference]: Finished difference Result 338 states and 914 transitions. [2020-11-28 07:33:42,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:33:42,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 07:33:42,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:42,256 INFO L225 Difference]: With dead ends: 338 [2020-11-28 07:33:42,256 INFO L226 Difference]: Without dead ends: 194 [2020-11-28 07:33:42,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:33:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-28 07:33:42,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-28 07:33:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-28 07:33:42,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 494 transitions. [2020-11-28 07:33:42,265 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 494 transitions. Word has length 10 [2020-11-28 07:33:42,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:42,265 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 494 transitions. [2020-11-28 07:33:42,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:42,266 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 494 transitions. [2020-11-28 07:33:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:33:42,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:42,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:42,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:33:42,267 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:42,268 INFO L82 PathProgramCache]: Analyzing trace with hash 150494398, now seen corresponding path program 1 times [2020-11-28 07:33:42,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:42,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564518994] [2020-11-28 07:33:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:42,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564518994] [2020-11-28 07:33:42,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:42,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:33:42,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611028179] [2020-11-28 07:33:42,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:42,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:42,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:42,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:42,369 INFO L87 Difference]: Start difference. First operand 194 states and 494 transitions. Second operand 4 states. [2020-11-28 07:33:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:42,392 INFO L93 Difference]: Finished difference Result 206 states and 508 transitions. [2020-11-28 07:33:42,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:42,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 07:33:42,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:42,394 INFO L225 Difference]: With dead ends: 206 [2020-11-28 07:33:42,394 INFO L226 Difference]: Without dead ends: 182 [2020-11-28 07:33:42,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-28 07:33:42,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-11-28 07:33:42,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-28 07:33:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 456 transitions. [2020-11-28 07:33:42,402 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 456 transitions. Word has length 12 [2020-11-28 07:33:42,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:42,403 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 456 transitions. [2020-11-28 07:33:42,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 456 transitions. [2020-11-28 07:33:42,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:42,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:42,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:42,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:33:42,405 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:42,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:42,406 INFO L82 PathProgramCache]: Analyzing trace with hash -10402391, now seen corresponding path program 1 times [2020-11-28 07:33:42,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:42,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295763962] [2020-11-28 07:33:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:42,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295763962] [2020-11-28 07:33:42,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:42,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:42,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975577855] [2020-11-28 07:33:42,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:42,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:42,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:42,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:42,484 INFO L87 Difference]: Start difference. First operand 182 states and 456 transitions. Second operand 5 states. [2020-11-28 07:33:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:42,551 INFO L93 Difference]: Finished difference Result 194 states and 473 transitions. [2020-11-28 07:33:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:33:42,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:33:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:42,554 INFO L225 Difference]: With dead ends: 194 [2020-11-28 07:33:42,554 INFO L226 Difference]: Without dead ends: 158 [2020-11-28 07:33:42,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:33:42,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-28 07:33:42,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-11-28 07:33:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-28 07:33:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 394 transitions. [2020-11-28 07:33:42,562 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 394 transitions. Word has length 13 [2020-11-28 07:33:42,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:42,562 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 394 transitions. [2020-11-28 07:33:42,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 394 transitions. [2020-11-28 07:33:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:42,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:42,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:42,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:33:42,567 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:42,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1736979236, now seen corresponding path program 1 times [2020-11-28 07:33:42,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:42,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725925150] [2020-11-28 07:33:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:42,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725925150] [2020-11-28 07:33:42,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:42,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:42,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530291675] [2020-11-28 07:33:42,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:42,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:42,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:42,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:42,657 INFO L87 Difference]: Start difference. First operand 158 states and 394 transitions. Second operand 5 states. [2020-11-28 07:33:42,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:42,700 INFO L93 Difference]: Finished difference Result 236 states and 587 transitions. [2020-11-28 07:33:42,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:42,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:33:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:42,702 INFO L225 Difference]: With dead ends: 236 [2020-11-28 07:33:42,703 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 07:33:42,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:42,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 07:33:42,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-28 07:33:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 07:33:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-11-28 07:33:42,708 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-11-28 07:33:42,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:42,708 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-11-28 07:33:42,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-11-28 07:33:42,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:42,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:42,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:42,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:33:42,710 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:42,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:42,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1184784502, now seen corresponding path program 2 times [2020-11-28 07:33:42,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:42,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252028269] [2020-11-28 07:33:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:42,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252028269] [2020-11-28 07:33:42,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:42,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:42,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282808355] [2020-11-28 07:33:42,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:42,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:42,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:42,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:42,757 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 5 states. [2020-11-28 07:33:42,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:42,834 INFO L93 Difference]: Finished difference Result 158 states and 381 transitions. [2020-11-28 07:33:42,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:33:42,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:33:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:42,836 INFO L225 Difference]: With dead ends: 158 [2020-11-28 07:33:42,836 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 07:33:42,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:33:42,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 07:33:42,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-28 07:33:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 07:33:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-11-28 07:33:42,839 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 13 [2020-11-28 07:33:42,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:42,840 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-11-28 07:33:42,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:42,840 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-11-28 07:33:42,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:33:42,840 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:42,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:42,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:33:42,841 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:42,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:42,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-11-28 07:33:42,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:42,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980687681] [2020-11-28 07:33:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:42,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980687681] [2020-11-28 07:33:42,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:42,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:42,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327504792] [2020-11-28 07:33:42,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:42,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:42,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:42,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:42,918 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-11-28 07:33:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:42,950 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-11-28 07:33:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:42,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 07:33:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:42,952 INFO L225 Difference]: With dead ends: 91 [2020-11-28 07:33:42,952 INFO L226 Difference]: Without dead ends: 69 [2020-11-28 07:33:42,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-28 07:33:42,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-28 07:33:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-28 07:33:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-11-28 07:33:42,957 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-11-28 07:33:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:42,957 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-11-28 07:33:42,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-11-28 07:33:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:33:42,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:42,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:42,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:33:42,958 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:42,959 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-11-28 07:33:42,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:42,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999551852] [2020-11-28 07:33:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:43,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999551852] [2020-11-28 07:33:43,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:43,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:43,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134251995] [2020-11-28 07:33:43,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:43,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:43,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:43,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:43,013 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-11-28 07:33:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:43,056 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-11-28 07:33:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:43,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 07:33:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:43,057 INFO L225 Difference]: With dead ends: 65 [2020-11-28 07:33:43,058 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 07:33:43,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 07:33:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-28 07:33:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 07:33:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-11-28 07:33:43,061 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-11-28 07:33:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:43,061 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-11-28 07:33:43,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-11-28 07:33:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:33:43,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:43,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:43,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:33:43,062 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:43,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-11-28 07:33:43,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:43,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517365223] [2020-11-28 07:33:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:43,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517365223] [2020-11-28 07:33:43,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:43,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:33:43,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545541644] [2020-11-28 07:33:43,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:43,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:43,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:43,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:43,116 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-11-28 07:33:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:43,168 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-11-28 07:33:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:33:43,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 07:33:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:43,170 INFO L225 Difference]: With dead ends: 43 [2020-11-28 07:33:43,170 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 07:33:43,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:33:43,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 07:33:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 07:33:43,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 07:33:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-11-28 07:33:43,172 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-11-28 07:33:43,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:43,172 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-11-28 07:33:43,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-11-28 07:33:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:33:43,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:43,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:43,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:33:43,173 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:43,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-11-28 07:33:43,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:43,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955125442] [2020-11-28 07:33:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:43,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955125442] [2020-11-28 07:33:43,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:43,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:33:43,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649945318] [2020-11-28 07:33:43,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:43,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:43,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:43,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:43,223 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-11-28 07:33:43,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:43,248 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-11-28 07:33:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:43,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 07:33:43,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:43,248 INFO L225 Difference]: With dead ends: 36 [2020-11-28 07:33:43,248 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:33:43,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:33:43,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:33:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:33:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:33:43,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 07:33:43,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:43,250 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:33:43,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:33:43,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:33:43,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:33:43,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:33:43 BasicIcfg [2020-11-28 07:33:43,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:33:43,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:33:43,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:33:43,253 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:33:43,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:38" (3/4) ... [2020-11-28 07:33:43,262 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:33:43,268 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 07:33:43,269 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 07:33:43,269 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 07:33:43,276 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 07:33:43,276 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:33:43,276 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:33:43,276 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:33:43,335 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cf562128-8854-4aec-b3aa-0acd9a84aa44/bin/utaipan/witness.graphml [2020-11-28 07:33:43,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:33:43,337 INFO L168 Benchmark]: Toolchain (without parser) took 6124.61 ms. Allocated memory was 109.1 MB in the beginning and 176.2 MB in the end (delta: 67.1 MB). Free memory was 81.2 MB in the beginning and 91.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 58.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,338 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 71.3 MB. Free memory was 38.0 MB in the beginning and 38.0 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:33:43,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.51 ms. Allocated memory is still 109.1 MB. Free memory was 81.0 MB in the beginning and 50.1 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.75 ms. Allocated memory is still 109.1 MB. Free memory was 49.9 MB in the beginning and 87.6 MB in the end (delta: -37.7 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,339 INFO L168 Benchmark]: Boogie Preprocessor took 54.89 ms. Allocated memory is still 109.1 MB. Free memory was 87.6 MB in the beginning and 86.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,340 INFO L168 Benchmark]: RCFGBuilder took 643.03 ms. Allocated memory is still 109.1 MB. Free memory was 86.3 MB in the beginning and 64.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,340 INFO L168 Benchmark]: TraceAbstraction took 4604.41 ms. Allocated memory was 109.1 MB in the beginning and 176.2 MB in the end (delta: 67.1 MB). Free memory was 63.8 MB in the beginning and 93.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,343 INFO L168 Benchmark]: Witness Printer took 82.54 ms. Allocated memory is still 176.2 MB. Free memory was 93.5 MB in the beginning and 91.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:43,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 71.3 MB. Free memory was 38.0 MB in the beginning and 38.0 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 647.51 ms. Allocated memory is still 109.1 MB. Free memory was 81.0 MB in the beginning and 50.1 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.75 ms. Allocated memory is still 109.1 MB. Free memory was 49.9 MB in the beginning and 87.6 MB in the end (delta: -37.7 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.89 ms. Allocated memory is still 109.1 MB. Free memory was 87.6 MB in the beginning and 86.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 643.03 ms. Allocated memory is still 109.1 MB. Free memory was 86.3 MB in the beginning and 64.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4604.41 ms. Allocated memory was 109.1 MB in the beginning and 176.2 MB in the end (delta: 67.1 MB). Free memory was 63.8 MB in the beginning and 93.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. * Witness Printer took 82.54 ms. Allocated memory is still 176.2 MB. Free memory was 93.5 MB in the beginning and 91.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 955 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 217 SDtfs, 271 SDslu, 336 SDs, 0 SdLazy, 155 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4724 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...