/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:16:03,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:16:03,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:16:03,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:16:03,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:16:03,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:16:03,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:16:03,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:16:03,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:16:03,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:16:03,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:16:03,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:16:03,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:16:03,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:16:03,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:16:03,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:16:03,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:16:03,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:16:03,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:16:03,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:16:03,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:16:03,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:16:03,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:16:03,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:16:03,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 00:16:03,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 00:16:03,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 00:16:03,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 00:16:03,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 00:16:03,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 00:16:03,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 00:16:03,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 00:16:03,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 00:16:03,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:16:03,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:16:03,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:16:03,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 00:16:03,848 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:16:03,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:16:03,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:16:03,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:16:03,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:16:03,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:16:03,850 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:16:03,851 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:16:03,851 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:16:03,851 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:16:03,852 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:16:03,852 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:16:03,852 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:16:03,852 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:16:03,852 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:16:03,852 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:16:03,852 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:16:03,853 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:16:03,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:16:03,853 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:16:03,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:16:03,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:16:03,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:16:03,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:16:03,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:16:03,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:16:03,854 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:16:03,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:16:03,855 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:16:03,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:16:03,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:16:03,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:16:03,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:16:03,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:16:03,855 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:16:03,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:16:03,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:16:03,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:16:03,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:16:03,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:16:03,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:16:03,856 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:16:04,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:16:04,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:16:04,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:16:04,140 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:16:04,141 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:16:04,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c [2023-04-01 00:16:05,304 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:16:05,540 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:16:05,540 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c [2023-04-01 00:16:05,551 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd3f732f/25225a6dc97c47c3a7db34aa0a301e19/FLAGb3b981014 [2023-04-01 00:16:05,569 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd3f732f/25225a6dc97c47c3a7db34aa0a301e19 [2023-04-01 00:16:05,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:16:05,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:16:05,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:16:05,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:16:05,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:16:05,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:05,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4253de66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05, skipping insertion in model container [2023-04-01 00:16:05,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:05,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:16:05,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:16:05,836 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c[26481,26494] [2023-04-01 00:16:05,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:16:05,856 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:16:05,936 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c[26481,26494] [2023-04-01 00:16:05,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:16:05,957 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:16:05,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05 WrapperNode [2023-04-01 00:16:05,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:16:05,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:16:05,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:16:05,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:16:05,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:05,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:05,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:05,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:05,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:06,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:06,010 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:06,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:06,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:16:06,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:16:06,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:16:06,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:16:06,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05" (1/1) ... [2023-04-01 00:16:06,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:16:06,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:16:06,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 00:16:06,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 00:16:06,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:16:06,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:16:06,111 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:16:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:16:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-01 00:16:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-01 00:16:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-01 00:16:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-01 00:16:06,113 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-01 00:16:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-01 00:16:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure node7 [2023-04-01 00:16:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure node8 [2023-04-01 00:16:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 00:16:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 00:16:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:16:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 00:16:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:16:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 00:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 00:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 00:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-01 00:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-01 00:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2023-04-01 00:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:16:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:16:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:16:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:16:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:16:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:16:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:16:06,266 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:16:06,270 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:16:06,840 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:16:07,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:16:07,658 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 00:16:07,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:16:07 BoogieIcfgContainer [2023-04-01 00:16:07,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:16:07,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:16:07,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:16:07,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:16:07,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:16:05" (1/3) ... [2023-04-01 00:16:07,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6339c7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:16:07, skipping insertion in model container [2023-04-01 00:16:07,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:16:05" (2/3) ... [2023-04-01 00:16:07,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6339c7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:16:07, skipping insertion in model container [2023-04-01 00:16:07,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:16:07" (3/3) ... [2023-04-01 00:16:07,670 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals.c [2023-04-01 00:16:07,686 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:16:07,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:16:07,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:16:07,745 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@530544fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:16:07,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:16:07,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 30 states have internal predecessors, (34), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-01 00:16:07,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-01 00:16:07,758 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:16:07,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:16:07,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:16:07,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:16:07,767 INFO L85 PathProgramCache]: Analyzing trace with hash -151454855, now seen corresponding path program 1 times [2023-04-01 00:16:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:16:07,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726407276] [2023-04-01 00:16:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:16:07,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:16:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:16:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:16:15,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:16:15,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726407276] [2023-04-01 00:16:15,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726407276] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:16:15,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:16:15,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2023-04-01 00:16:15,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946300888] [2023-04-01 00:16:15,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:16:15,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-04-01 00:16:15,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:16:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-04-01 00:16:15,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 00:16:15,238 INFO L87 Difference]: Start difference. First operand has 58 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 30 states have internal predecessors, (34), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 34 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (14), 11 states have call predecessors, (14), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-01 00:16:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:16:17,489 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2023-04-01 00:16:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-01 00:16:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (14), 11 states have call predecessors, (14), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 49 [2023-04-01 00:16:17,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:16:17,502 INFO L225 Difference]: With dead ends: 142 [2023-04-01 00:16:17,503 INFO L226 Difference]: Without dead ends: 97 [2023-04-01 00:16:17,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-04-01 00:16:17,512 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 474 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 00:16:17,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 149 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 00:16:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-04-01 00:16:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2023-04-01 00:16:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 40 states have (on average 1.1) internal successors, (44), 41 states have internal predecessors, (44), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2023-04-01 00:16:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2023-04-01 00:16:17,601 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 49 [2023-04-01 00:16:17,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:16:17,603 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2023-04-01 00:16:17,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (14), 11 states have call predecessors, (14), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-01 00:16:17,603 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2023-04-01 00:16:17,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 00:16:17,607 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:16:17,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:16:17,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:16:17,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:16:17,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:16:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1455010983, now seen corresponding path program 1 times [2023-04-01 00:16:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:16:17,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751032151] [2023-04-01 00:16:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:16:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:16:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:16:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:16:18,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:16:18,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751032151] [2023-04-01 00:16:18,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751032151] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:16:18,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:16:18,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:16:18,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650007503] [2023-04-01 00:16:18,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:16:18,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:16:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:16:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:16:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:16:18,744 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 11 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 00:16:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:16:19,377 INFO L93 Difference]: Finished difference Result 189 states and 203 transitions. [2023-04-01 00:16:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 00:16:19,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 51 [2023-04-01 00:16:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:16:19,380 INFO L225 Difference]: With dead ends: 189 [2023-04-01 00:16:19,380 INFO L226 Difference]: Without dead ends: 145 [2023-04-01 00:16:19,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-04-01 00:16:19,382 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 105 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:16:19,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 129 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:16:19,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-04-01 00:16:19,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 130. [2023-04-01 00:16:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 65 states have internal predecessors, (70), 33 states have call successors, (33), 33 states have call predecessors, (33), 33 states have return successors, (34), 31 states have call predecessors, (34), 32 states have call successors, (34) [2023-04-01 00:16:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2023-04-01 00:16:19,421 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 51 [2023-04-01 00:16:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:16:19,421 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2023-04-01 00:16:19,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 00:16:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2023-04-01 00:16:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 00:16:19,422 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:16:19,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:16:19,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:16:19,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:16:19,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:16:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1866150495, now seen corresponding path program 1 times [2023-04-01 00:16:19,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:16:19,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566934791] [2023-04-01 00:16:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:16:19,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:16:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:16:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:16:24,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:16:24,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566934791] [2023-04-01 00:16:24,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566934791] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:16:24,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:16:24,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2023-04-01 00:16:24,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887529744] [2023-04-01 00:16:24,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:16:24,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-04-01 00:16:24,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:16:24,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-04-01 00:16:24,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 00:16:24,581 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand has 34 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 13 states have call successors, (14), 11 states have call predecessors, (14), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-01 00:16:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:16:27,015 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2023-04-01 00:16:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-01 00:16:27,016 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 13 states have call successors, (14), 11 states have call predecessors, (14), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 51 [2023-04-01 00:16:27,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:16:27,017 INFO L225 Difference]: With dead ends: 239 [2023-04-01 00:16:27,018 INFO L226 Difference]: Without dead ends: 154 [2023-04-01 00:16:27,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=887, Invalid=3669, Unknown=0, NotChecked=0, Total=4556 [2023-04-01 00:16:27,020 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 779 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 00:16:27,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 125 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 00:16:27,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-04-01 00:16:27,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2023-04-01 00:16:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 65 states have internal predecessors, (69), 33 states have call successors, (33), 33 states have call predecessors, (33), 33 states have return successors, (34), 31 states have call predecessors, (34), 32 states have call successors, (34) [2023-04-01 00:16:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2023-04-01 00:16:27,059 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 51 [2023-04-01 00:16:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:16:27,060 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2023-04-01 00:16:27,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 13 states have call successors, (14), 11 states have call predecessors, (14), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-01 00:16:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2023-04-01 00:16:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 00:16:27,061 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:16:27,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:16:27,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:16:27,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:16:27,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:16:27,062 INFO L85 PathProgramCache]: Analyzing trace with hash -161492505, now seen corresponding path program 1 times [2023-04-01 00:16:27,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:16:27,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414210643] [2023-04-01 00:16:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:16:27,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:16:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:16:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:16:29,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:16:29,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414210643] [2023-04-01 00:16:29,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414210643] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:16:29,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:16:29,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-01 00:16:29,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931127310] [2023-04-01 00:16:29,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:16:29,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 00:16:29,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:16:29,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 00:16:29,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-04-01 00:16:29,117 INFO L87 Difference]: Start difference. First operand 130 states and 136 transitions. Second operand has 13 states, 8 states have (on average 3.25) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-01 00:16:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:16:29,443 INFO L93 Difference]: Finished difference Result 168 states and 187 transitions. [2023-04-01 00:16:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 00:16:29,444 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 3.25) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 52 [2023-04-01 00:16:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:16:29,445 INFO L225 Difference]: With dead ends: 168 [2023-04-01 00:16:29,445 INFO L226 Difference]: Without dead ends: 166 [2023-04-01 00:16:29,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-04-01 00:16:29,447 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 35 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:16:29,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 697 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:16:29,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-04-01 00:16:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2023-04-01 00:16:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 68 states have (on average 1.088235294117647) internal successors, (74), 71 states have internal predecessors, (74), 34 states have call successors, (34), 34 states have call predecessors, (34), 35 states have return successors, (36), 32 states have call predecessors, (36), 33 states have call successors, (36) [2023-04-01 00:16:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 144 transitions. [2023-04-01 00:16:29,492 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 144 transitions. Word has length 52 [2023-04-01 00:16:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:16:29,492 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 144 transitions. [2023-04-01 00:16:29,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 3.25) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-01 00:16:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 144 transitions. [2023-04-01 00:16:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-01 00:16:29,494 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:16:29,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:16:29,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:16:29,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:16:29,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:16:29,495 INFO L85 PathProgramCache]: Analyzing trace with hash 360542012, now seen corresponding path program 1 times [2023-04-01 00:16:29,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:16:29,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907852555] [2023-04-01 00:16:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:16:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:16:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat