./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 211ff4d6a654e925d7b0753c61a65231458a0bc5 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 17:46:31,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:46:31,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:46:31,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:46:31,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:46:31,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:46:31,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:46:31,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:46:31,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:46:31,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:46:31,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:46:31,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:46:31,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:46:31,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:46:31,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:46:31,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:46:31,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:46:31,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:46:31,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:46:31,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:46:31,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:46:31,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:46:31,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:46:31,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:46:31,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:46:31,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:46:31,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:46:31,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:46:31,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:46:31,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:46:31,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:46:31,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:46:31,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:46:31,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:46:31,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:46:31,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:46:31,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:46:31,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:46:31,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:46:31,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:46:31,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:46:31,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 17:46:31,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:46:31,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:46:31,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:46:31,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:46:31,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:46:31,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:46:31,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:46:31,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:46:31,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:46:31,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:46:31,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:46:31,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:46:31,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:46:31,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:46:31,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:46:31,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:46:31,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:46:31,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:46:31,744 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:46:31,745 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:46:31,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:46:31,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:46:31,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:46:31,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:46:31,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:46:31,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:46:31,746 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:46:31,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:46:31,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:46:31,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 211ff4d6a654e925d7b0753c61a65231458a0bc5 [2020-12-01 17:46:31,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:46:32,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:46:32,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:46:32,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:46:32,019 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:46:32,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/../../sv-benchmarks/c/forester-heap/dll-queue-2.i [2020-12-01 17:46:32,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/data/c06145b32/5dfa4ccea20c4b4e9b4fe5b2325550ae/FLAGae9155703 [2020-12-01 17:46:32,687 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:46:32,687 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/sv-benchmarks/c/forester-heap/dll-queue-2.i [2020-12-01 17:46:32,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/data/c06145b32/5dfa4ccea20c4b4e9b4fe5b2325550ae/FLAGae9155703 [2020-12-01 17:46:32,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/data/c06145b32/5dfa4ccea20c4b4e9b4fe5b2325550ae [2020-12-01 17:46:32,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:46:32,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:46:32,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:46:32,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:46:32,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:46:32,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:46:32" (1/1) ... [2020-12-01 17:46:32,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325253bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:32, skipping insertion in model container [2020-12-01 17:46:32,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:46:32" (1/1) ... [2020-12-01 17:46:33,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:46:33,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:46:33,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:46:33,431 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:46:33,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:46:33,607 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:46:33,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33 WrapperNode [2020-12-01 17:46:33,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:46:33,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:46:33,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:46:33,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:46:33,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33" (1/1) ... [2020-12-01 17:46:33,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33" (1/1) ... [2020-12-01 17:46:33,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:46:33,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:46:33,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:46:33,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:46:33,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33" (1/1) ... [2020-12-01 17:46:33,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33" (1/1) ... [2020-12-01 17:46:33,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33" (1/1) ... [2020-12-01 17:46:33,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33" (1/1) ... [2020-12-01 17:46:33,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33" (1/1) ... [2020-12-01 17:46:33,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33" (1/1) ... [2020-12-01 17:46:33,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33" (1/1) ... [2020-12-01 17:46:33,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:46:33,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:46:33,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:46:33,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:46:33,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:46:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2020-12-01 17:46:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-12-01 17:46:33,867 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-12-01 17:46:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 17:46:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 17:46:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 17:46:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 17:46:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 17:46:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 17:46:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 17:46:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 17:46:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:46:33,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:46:34,668 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:46:34,668 INFO L298 CfgBuilder]: Removed 35 assume(true) statements. [2020-12-01 17:46:34,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:46:34 BoogieIcfgContainer [2020-12-01 17:46:34,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:46:34,672 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:46:34,672 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:46:34,686 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:46:34,687 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:46:34" (1/1) ... [2020-12-01 17:46:34,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:46:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 81 states and 144 transitions. [2020-12-01 17:46:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 144 transitions. [2020-12-01 17:46:34,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 17:46:34,755 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:34,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 65 states and 109 transitions. [2020-12-01 17:46:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 109 transitions. [2020-12-01 17:46:34,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 17:46:34,916 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 68 states and 114 transitions. [2020-12-01 17:46:35,040 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 114 transitions. [2020-12-01 17:46:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 17:46:35,041 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 69 states and 114 transitions. [2020-12-01 17:46:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 114 transitions. [2020-12-01 17:46:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 17:46:35,176 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 73 states and 120 transitions. [2020-12-01 17:46:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 120 transitions. [2020-12-01 17:46:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 17:46:35,665 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 78 states and 126 transitions. [2020-12-01 17:46:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 126 transitions. [2020-12-01 17:46:36,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 17:46:36,052 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:36,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 79 states and 126 transitions. [2020-12-01 17:46:36,146 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 126 transitions. [2020-12-01 17:46:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 17:46:36,147 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 81 states and 127 transitions. [2020-12-01 17:46:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 127 transitions. [2020-12-01 17:46:36,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 17:46:36,285 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 76 states and 117 transitions. [2020-12-01 17:46:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 117 transitions. [2020-12-01 17:46:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 17:46:36,706 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 81 states and 122 transitions. [2020-12-01 17:46:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 122 transitions. [2020-12-01 17:46:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 17:46:36,914 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 80 states and 120 transitions. [2020-12-01 17:46:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 120 transitions. [2020-12-01 17:46:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 17:46:37,085 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:38,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 89 states and 135 transitions. [2020-12-01 17:46:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 135 transitions. [2020-12-01 17:46:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 17:46:38,085 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 92 states and 138 transitions. [2020-12-01 17:46:38,252 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 138 transitions. [2020-12-01 17:46:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 17:46:38,253 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:38,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 94 states and 140 transitions. [2020-12-01 17:46:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 140 transitions. [2020-12-01 17:46:38,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 17:46:38,457 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:40,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:40,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 109 states and 164 transitions. [2020-12-01 17:46:40,120 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 164 transitions. [2020-12-01 17:46:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 17:46:40,121 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 112 states and 167 transitions. [2020-12-01 17:46:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 167 transitions. [2020-12-01 17:46:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 17:46:40,372 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 114 states and 169 transitions. [2020-12-01 17:46:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 169 transitions. [2020-12-01 17:46:40,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 17:46:40,673 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:46:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 124 states and 188 transitions. [2020-12-01 17:46:42,431 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 188 transitions. [2020-12-01 17:46:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 17:46:42,432 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 126 states and 192 transitions. [2020-12-01 17:46:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 192 transitions. [2020-12-01 17:46:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 17:46:43,178 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:43,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 128 states and 195 transitions. [2020-12-01 17:46:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 195 transitions. [2020-12-01 17:46:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 17:46:43,537 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-01 17:46:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 130 states and 199 transitions. [2020-12-01 17:46:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 199 transitions. [2020-12-01 17:46:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 17:46:43,842 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-01 17:46:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 133 states and 207 transitions. [2020-12-01 17:46:44,235 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 207 transitions. [2020-12-01 17:46:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 17:46:44,236 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:44,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 137 states and 210 transitions. [2020-12-01 17:46:44,937 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 210 transitions. [2020-12-01 17:46:44,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 17:46:44,938 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 157 states and 253 transitions. [2020-12-01 17:46:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 253 transitions. [2020-12-01 17:46:48,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 17:46:48,408 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 162 states and 259 transitions. [2020-12-01 17:46:49,048 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 259 transitions. [2020-12-01 17:46:49,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 17:46:49,049 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 164 states and 265 transitions. [2020-12-01 17:46:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 265 transitions. [2020-12-01 17:46:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 17:46:49,510 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:53,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 184 states and 299 transitions. [2020-12-01 17:46:53,737 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 299 transitions. [2020-12-01 17:46:53,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 17:46:53,738 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 193 states and 312 transitions. [2020-12-01 17:46:56,106 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 312 transitions. [2020-12-01 17:46:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 17:46:56,107 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 197 states and 316 transitions. [2020-12-01 17:46:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 316 transitions. [2020-12-01 17:46:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 17:46:56,679 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:46:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:46:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 199 states and 319 transitions. [2020-12-01 17:46:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 319 transitions. [2020-12-01 17:46:57,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 17:46:57,286 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:46:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:46:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 219 states and 353 transitions. [2020-12-01 17:47:01,756 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 353 transitions. [2020-12-01 17:47:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 17:47:01,757 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 222 states and 356 transitions. [2020-12-01 17:47:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 356 transitions. [2020-12-01 17:47:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 17:47:02,197 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:02,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 224 states and 359 transitions. [2020-12-01 17:47:02,798 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 359 transitions. [2020-12-01 17:47:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 17:47:02,799 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 227 states and 361 transitions. [2020-12-01 17:47:03,622 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 361 transitions. [2020-12-01 17:47:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 17:47:03,623 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-01 17:47:05,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 235 states and 374 transitions. [2020-12-01 17:47:05,593 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 374 transitions. [2020-12-01 17:47:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 17:47:05,594 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:08,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 245 states and 397 transitions. [2020-12-01 17:47:08,874 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 397 transitions. [2020-12-01 17:47:08,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 17:47:08,875 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 247 states and 400 transitions. [2020-12-01 17:47:09,466 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 400 transitions. [2020-12-01 17:47:09,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 17:47:09,467 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 250 states and 403 transitions. [2020-12-01 17:47:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 403 transitions. [2020-12-01 17:47:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 17:47:10,165 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 269 states and 439 transitions. [2020-12-01 17:47:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 439 transitions. [2020-12-01 17:47:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 17:47:16,524 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 280 states and 461 transitions. [2020-12-01 17:47:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 461 transitions. [2020-12-01 17:47:19,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 17:47:19,350 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 281 states and 462 transitions. [2020-12-01 17:47:19,900 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 462 transitions. [2020-12-01 17:47:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 17:47:19,901 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 292 states and 487 transitions. [2020-12-01 17:47:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 487 transitions. [2020-12-01 17:47:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 17:47:24,723 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:25,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 295 states and 491 transitions. [2020-12-01 17:47:25,826 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 491 transitions. [2020-12-01 17:47:25,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 17:47:25,827 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:26,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 298 states and 494 transitions. [2020-12-01 17:47:26,552 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 494 transitions. [2020-12-01 17:47:26,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-01 17:47:26,553 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-01 17:47:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 299 states and 497 transitions. [2020-12-01 17:47:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 497 transitions. [2020-12-01 17:47:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 17:47:26,956 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 318 states and 527 transitions. [2020-12-01 17:47:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 527 transitions. [2020-12-01 17:47:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 17:47:34,341 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 319 states and 529 transitions. [2020-12-01 17:47:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 529 transitions. [2020-12-01 17:47:35,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 17:47:35,248 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 320 states and 529 transitions. [2020-12-01 17:47:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 529 transitions. [2020-12-01 17:47:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 17:47:36,078 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 344 states and 579 transitions. [2020-12-01 17:47:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 579 transitions. [2020-12-01 17:47:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 17:47:43,711 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 347 states and 584 transitions. [2020-12-01 17:47:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 584 transitions. [2020-12-01 17:47:44,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 17:47:44,931 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 350 states and 587 transitions. [2020-12-01 17:47:45,593 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 587 transitions. [2020-12-01 17:47:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-01 17:47:45,595 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:47:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 353 states and 589 transitions. [2020-12-01 17:47:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 589 transitions. [2020-12-01 17:47:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 17:47:47,141 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:47:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:47:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 358 states and 595 transitions. [2020-12-01 17:47:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 595 transitions. [2020-12-01 17:47:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 17:47:52,530 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:47:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:47:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 385 states and 652 transitions. [2020-12-01 17:48:04,756 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 652 transitions. [2020-12-01 17:48:04,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 17:48:04,757 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 388 states and 658 transitions. [2020-12-01 17:48:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 658 transitions. [2020-12-01 17:48:06,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 17:48:06,385 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:13,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 393 states and 680 transitions. [2020-12-01 17:48:13,396 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 680 transitions. [2020-12-01 17:48:13,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 17:48:13,397 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 395 states and 685 transitions. [2020-12-01 17:48:14,390 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 685 transitions. [2020-12-01 17:48:14,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-01 17:48:14,391 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:17,541 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-01 17:48:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 424 states and 742 transitions. [2020-12-01 17:48:37,110 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 742 transitions. [2020-12-01 17:48:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-01 17:48:37,111 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:38,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 425 states and 745 transitions. [2020-12-01 17:48:38,366 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 745 transitions. [2020-12-01 17:48:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-01 17:48:38,367 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 426 states and 745 transitions. [2020-12-01 17:48:39,507 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 745 transitions. [2020-12-01 17:48:39,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-01 17:48:39,508 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:48:39,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:48:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:48:39,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:48:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:48:41,659 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:48:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:48:42,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:48:43,962 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 60 iterations. [2020-12-01 17:48:44,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:48:44 ImpRootNode [2020-12-01 17:48:44,011 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:48:44,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:48:44,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:48:44,012 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:48:44,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:46:34" (3/4) ... [2020-12-01 17:48:44,015 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 17:48:44,090 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_faac81db-9e9a-4b74-8cf6-033044c5a8f5/bin/ukojak/witness.graphml [2020-12-01 17:48:44,090 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:48:44,091 INFO L168 Benchmark]: Toolchain (without parser) took 131108.32 ms. Allocated memory was 92.3 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 62.6 MB in the beginning and 863.9 MB in the end (delta: -801.3 MB). Peak memory consumption was 880.7 MB. Max. memory is 16.1 GB. [2020-12-01 17:48:44,092 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 42.6 MB in the beginning and 42.5 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:48:44,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.53 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 69.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-01 17:48:44,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.62 ms. Allocated memory is still 92.3 MB. Free memory was 69.8 MB in the beginning and 67.5 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:48:44,094 INFO L168 Benchmark]: Boogie Preprocessor took 62.72 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 65.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:48:44,094 INFO L168 Benchmark]: RCFGBuilder took 884.06 ms. Allocated memory is still 92.3 MB. Free memory was 65.2 MB in the beginning and 49.4 MB in the end (delta: 15.8 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-12-01 17:48:44,095 INFO L168 Benchmark]: CodeCheck took 129339.62 ms. Allocated memory was 92.3 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 49.4 MB in the beginning and 868.1 MB in the end (delta: -818.7 MB). Peak memory consumption was 861.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:48:44,096 INFO L168 Benchmark]: Witness Printer took 78.58 ms. Allocated memory is still 1.8 GB. Free memory was 867.1 MB in the beginning and 863.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 17:48:44,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 129.2s, OverallIterations: 60, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: -1052757632 SDtfs, 2137883274 SDslu, 539494868 SDs, 0 SdLazy, 1563705966 SolverSat, 953508272 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 133.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15617 GetRequests, 14149 SyntacticMatches, 592 SemanticMatches, 876 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450982 ImplicationChecksByTransitivity, 113.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.1s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 1638 NumberOfCodeBlocks, 1638 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 1537 ConstructedInterpolants, 0 QuantifiedInterpolants, 814599 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 59 InterpolantComputations, 11 PerfectInterpolantSequences, 46/728 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1001] SLL* item = head; [L1002] int status = 0; [L1004] COND TRUE __VERIFIER_nondet_int() [L1006] item->next = malloc(sizeof(SLL)) [L1007] EXPR item->next [L1007] item->next->prev = item [L1008] EXPR item->next [L1008] item = item->next [L1009] item->next = ((void*)0) [L1011] COND TRUE !status [L1013] item->data = 1 [L1014] status = 1 [L1027] COND FALSE !(!(head != ((void*)0))) [L1028] COND FALSE !(!(item != ((void*)0))) [L1004] COND TRUE __VERIFIER_nondet_int() [L1006] item->next = malloc(sizeof(SLL)) [L1007] EXPR item->next [L1007] item->next->prev = item [L1008] EXPR item->next [L1008] item = item->next [L1009] item->next = ((void*)0) [L1011] COND FALSE !(!status) [L1016] COND TRUE status == 1 [L1018] item->data = 2 [L1019] status = 2 [L1027] COND FALSE !(!(head != ((void*)0))) [L1028] COND FALSE !(!(item != ((void*)0))) [L1004] COND TRUE __VERIFIER_nondet_int() [L1006] item->next = malloc(sizeof(SLL)) [L1007] EXPR item->next [L1007] item->next->prev = item [L1008] EXPR item->next [L1008] item = item->next [L1009] item->next = ((void*)0) [L1011] COND FALSE !(!status) [L1016] COND FALSE !(status == 1) [L1021] COND TRUE status >= 2 [L1023] item->data = 3 [L1024] status = 3 [L1027] COND FALSE !(!(head != ((void*)0))) [L1028] COND FALSE !(!(item != ((void*)0))) [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1031] COND FALSE !(!(head != ((void*)0))) [L1032] COND FALSE !(status == 1) [L1037] COND FALSE !(status == 2) [L1043] COND TRUE status == 3 [L1045] COND FALSE !(!(head != ((void*)0))) [L1046] EXPR head->next [L1046] COND FALSE !(!(head->next != ((void*)0))) [L1047] EXPR head->next [L1047] EXPR head->next->next [L1047] COND FALSE !(!(head->next->next != ((void*)0))) [L1048] EXPR head->next [L1048] EXPR head->next->next [L1048] EXPR head->next->next->next [L1048] COND FALSE !(!(head->next->next->next != ((void*)0))) [L1049] EXPR head->next [L1049] EXPR head->next->next [L1049] EXPR head->next->next->next [L1049] EXPR head->next->next->next->data [L1049] COND TRUE !(head->next->next->next->data != 3) [L1049] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-queue-2.c", 16, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 42.6 MB in the beginning and 42.5 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 638.53 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 69.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.62 ms. Allocated memory is still 92.3 MB. Free memory was 69.8 MB in the beginning and 67.5 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.72 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 65.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 884.06 ms. Allocated memory is still 92.3 MB. Free memory was 65.2 MB in the beginning and 49.4 MB in the end (delta: 15.8 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. * CodeCheck took 129339.62 ms. Allocated memory was 92.3 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 49.4 MB in the beginning and 868.1 MB in the end (delta: -818.7 MB). Peak memory consumption was 861.4 MB. Max. memory is 16.1 GB. * Witness Printer took 78.58 ms. Allocated memory is still 1.8 GB. Free memory was 867.1 MB in the beginning and 863.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...