/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/heap-data/shared_mem1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:56:24,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:56:24,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:56:24,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:56:24,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:56:24,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:56:24,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:56:24,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:56:24,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:56:24,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:56:24,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:56:24,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:56:24,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:56:24,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:56:24,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:56:24,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:56:24,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:56:24,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:56:24,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:56:24,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:56:24,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:56:24,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:56:24,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:56:24,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:56:24,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:56:24,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:56:24,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:56:24,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:56:24,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:56:24,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:56:24,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:56:24,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:56:24,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:56:24,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:56:24,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:56:24,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:56:24,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:56:24,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:56:24,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:56:24,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:56:24,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:56:24,807 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 [2023-03-31 22:56:24,832 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:56:24,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:56:24,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:56:24,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:56:24,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:56:24,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:56:24,834 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:56:24,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:56:24,834 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:56:24,834 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:56:24,834 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:56:24,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:56:24,835 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:56:24,835 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:56:24,835 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:56:24,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:56:24,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:56:24,835 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:56:24,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:56:24,836 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:56:24,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:56:24,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:56:24,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:56:24,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:56:24,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:56:24,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:56:24,836 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:56:24,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:56:24,837 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:56:24,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:56:24,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:56:24,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:56:24,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:56:24,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:56:24,837 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:56:24,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:56:24,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:56:24,838 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:56:24,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:56:24,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:56:24,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:56:24,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:56:24,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:56:25,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:56:25,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:56:25,008 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:56:25,009 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:56:25,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/shared_mem1.i [2023-03-31 22:56:25,924 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:56:26,153 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:56:26,154 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/shared_mem1.i [2023-03-31 22:56:26,165 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d65d60a9/be18c253003144e5bfdd5cbaf093ed7c/FLAG4038af5e2 [2023-03-31 22:56:26,557 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d65d60a9/be18c253003144e5bfdd5cbaf093ed7c [2023-03-31 22:56:26,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:56:26,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:56:26,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:56:26,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:56:26,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:56:26,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517fe74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26, skipping insertion in model container [2023-03-31 22:56:26,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:56:26,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:56:26,790 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/heap-data/shared_mem1.i[23879,23892] [2023-03-31 22:56:26,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:56:26,799 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:56:26,824 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/heap-data/shared_mem1.i[23879,23892] [2023-03-31 22:56:26,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:56:26,842 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:56:26,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26 WrapperNode [2023-03-31 22:56:26,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:56:26,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:56:26,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:56:26,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:56:26,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,869 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:56:26,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:56:26,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:56:26,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:56:26,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26" (1/1) ... [2023-03-31 22:56:26,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:56:26,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:56:26,905 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) [2023-03-31 22:56:26,920 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 [2023-03-31 22:56:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:56:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:56:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:56:26,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-03-31 22:56:26,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-03-31 22:56:26,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 22:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 22:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 22:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 22:56:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 22:56:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 22:56:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 22:56:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 22:56:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 22:56:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 22:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 22:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 22:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 22:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 22:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 22:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 22:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 22:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 22:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 22:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 22:56:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 22:56:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 22:56:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 22:56:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 22:56:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 22:56:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 22:56:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 22:56:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 22:56:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 22:56:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 22:56:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 22:56:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 22:56:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 22:56:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 22:56:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 22:56:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 22:56:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 22:56:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 22:56:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 22:56:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 22:56:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 22:56:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 22:56:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 22:56:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 22:56:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 22:56:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 22:56:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 22:56:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 22:56:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 22:56:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 22:56:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 22:56:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 22:56:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 22:56:26,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:56:26,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 22:56:26,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:56:26,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 22:56:26,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 22:56:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:56:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:56:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:56:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:56:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:56:27,125 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:56:27,127 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:56:27,276 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:56:27,317 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:56:27,317 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-03-31 22:56:27,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:56:27 BoogieIcfgContainer [2023-03-31 22:56:27,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:56:27,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:56:27,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:56:27,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:56:27,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:56:26" (1/3) ... [2023-03-31 22:56:27,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4ad30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:56:27, skipping insertion in model container [2023-03-31 22:56:27,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:56:26" (2/3) ... [2023-03-31 22:56:27,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4ad30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:56:27, skipping insertion in model container [2023-03-31 22:56:27,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:56:27" (3/3) ... [2023-03-31 22:56:27,324 INFO L112 eAbstractionObserver]: Analyzing ICFG shared_mem1.i [2023-03-31 22:56:27,335 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:56:27,335 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:56:27,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:56:27,365 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;@7812d833, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:56:27,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:56:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 22:56:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 22:56:27,372 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:56:27,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:56:27,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:56:27,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:56:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1329679408, now seen corresponding path program 1 times [2023-03-31 22:56:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:56:27,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249224991] [2023-03-31 22:56:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:27,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:56:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:27,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:56:27,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249224991] [2023-03-31 22:56:27,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249224991] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:56:27,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:56:27,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 22:56:27,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42191329] [2023-03-31 22:56:27,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:56:27,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 22:56:27,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:56:27,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 22:56:27,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:56:27,571 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:27,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:56:27,591 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2023-03-31 22:56:27,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 22:56:27,593 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-03-31 22:56:27,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:56:27,597 INFO L225 Difference]: With dead ends: 23 [2023-03-31 22:56:27,597 INFO L226 Difference]: Without dead ends: 12 [2023-03-31 22:56:27,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:56:27,609 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:56:27,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:56:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-03-31 22:56:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-03-31 22:56:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-03-31 22:56:27,631 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2023-03-31 22:56:27,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:56:27,632 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-03-31 22:56:27,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:27,634 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-03-31 22:56:27,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 22:56:27,634 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:56:27,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:56:27,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:56:27,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:56:27,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:56:27,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2114424516, now seen corresponding path program 1 times [2023-03-31 22:56:27,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:56:27,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131999533] [2023-03-31 22:56:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:27,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:56:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:28,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:56:28,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131999533] [2023-03-31 22:56:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131999533] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:56:28,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:56:28,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 22:56:28,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67928646] [2023-03-31 22:56:28,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:56:28,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:56:28,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:56:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:56:28,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:56:28,260 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:28,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:56:28,330 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2023-03-31 22:56:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:56:28,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 22:56:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:56:28,331 INFO L225 Difference]: With dead ends: 19 [2023-03-31 22:56:28,331 INFO L226 Difference]: Without dead ends: 17 [2023-03-31 22:56:28,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 22:56:28,332 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:56:28,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:56:28,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-03-31 22:56:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-03-31 22:56:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-03-31 22:56:28,336 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2023-03-31 22:56:28,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:56:28,336 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-03-31 22:56:28,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-03-31 22:56:28,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-03-31 22:56:28,336 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:56:28,336 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:56:28,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:56:28,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:56:28,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:56:28,337 INFO L85 PathProgramCache]: Analyzing trace with hash -442281964, now seen corresponding path program 1 times [2023-03-31 22:56:28,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:56:28,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403652808] [2023-03-31 22:56:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:28,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:56:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:29,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:56:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403652808] [2023-03-31 22:56:29,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403652808] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:56:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415872282] [2023-03-31 22:56:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:29,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:56:29,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:56:29,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:56:29,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 22:56:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:29,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 48 conjunts are in the unsatisfiable core [2023-03-31 22:56:29,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:56:29,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 22:56:29,552 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2023-03-31 22:56:29,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 66 [2023-03-31 22:56:29,578 INFO L321 Elim1Store]: treesize reduction 47, result has 27.7 percent of original size [2023-03-31 22:56:29,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 83 [2023-03-31 22:56:29,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 22 [2023-03-31 22:56:29,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2023-03-31 22:56:29,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-03-31 22:56:29,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 22:56:29,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2023-03-31 22:56:29,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 22 [2023-03-31 22:56:29,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-03-31 22:56:29,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 22:56:29,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-03-31 22:56:29,974 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 22:56:29,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 128 [2023-03-31 22:56:29,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 129 [2023-03-31 22:56:29,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 119 [2023-03-31 22:56:30,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2023-03-31 22:56:30,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:30,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 5 [2023-03-31 22:56:30,184 INFO L321 Elim1Store]: treesize reduction 38, result has 19.1 percent of original size [2023-03-31 22:56:30,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 280 treesize of output 215 [2023-03-31 22:56:30,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:30,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 147 [2023-03-31 22:56:30,228 INFO L321 Elim1Store]: treesize reduction 92, result has 19.3 percent of original size [2023-03-31 22:56:30,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 135 treesize of output 136 [2023-03-31 22:56:30,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 86 [2023-03-31 22:56:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:30,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:56:30,505 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse62 (+ c_main_~list~0.offset 4))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| c_main_~list~0.base) .cse62))) (let ((.cse60 (select |c_#memory_int| .cse10)) (.cse61 (select (select |c_#memory_$Pointer$.offset| c_main_~list~0.base) .cse62))) (let ((.cse11 (+ c_main_~list~0.offset 8)) (.cse0 (select .cse60 .cse61))) (and (or (<= .cse0 100) (and (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (< (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180))) (let ((.cse6 (select (select .cse7 c_main_~list~0.base) .cse11)) (.cse9 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse5 (select (select .cse9 c_main_~list~0.base) .cse11)) (.cse8 (+ 4 .cse6))) (let ((.cse1 (store |c_#memory_int| .cse10 v_ArrVal_178)) (.cse2 (select (select .cse9 .cse5) .cse8))) (store .cse1 .cse2 (let ((.cse3 (select .cse1 .cse2)) (.cse4 (select (select .cse7 .cse5) .cse8))) (store .cse3 .cse4 (+ (select .cse3 .cse4) (* (- 1) (select (select .cse1 .cse5) .cse6)))))))))) c_main_~m~0.base) c_main_~m~0.offset) 110)) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (< 90 (select (select (let ((.cse18 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180))) (let ((.cse17 (select (select .cse18 c_main_~list~0.base) .cse11)) (.cse20 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse16 (select (select .cse20 c_main_~list~0.base) .cse11)) (.cse19 (+ 4 .cse17))) (let ((.cse12 (store |c_#memory_int| .cse10 v_ArrVal_178)) (.cse13 (select (select .cse20 .cse16) .cse19))) (store .cse12 .cse13 (let ((.cse14 (select .cse12 .cse13)) (.cse15 (select (select .cse18 .cse16) .cse19))) (store .cse14 .cse15 (+ (select .cse14 .cse15) (* (- 1) (select (select .cse12 .cse16) .cse17)))))))))) c_main_~m~0.base) c_main_~m~0.offset))) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (let ((.cse23 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180)) (.cse26 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse24 (select (select .cse26 c_main_~list~0.base) .cse11)) (.cse25 (+ 4 (select (select .cse23 c_main_~list~0.base) .cse11)))) (let ((.cse21 (store |c_#memory_int| .cse10 v_ArrVal_178)) (.cse22 (select (select .cse26 .cse24) .cse25))) (or (< 100 (select (select .cse21 .cse22) (select (select .cse23 .cse24) .cse25))) (forall ((v_ArrVal_183 (Array Int Int))) (< 90 (select (select (store .cse21 .cse22 v_ArrVal_183) c_main_~m~0.base) c_main_~m~0.offset)))))))) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (let ((.cse29 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180)) (.cse32 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse30 (select (select .cse32 c_main_~list~0.base) .cse11)) (.cse31 (+ 4 (select (select .cse29 c_main_~list~0.base) .cse11)))) (let ((.cse27 (store |c_#memory_int| .cse10 v_ArrVal_178)) (.cse28 (select (select .cse32 .cse30) .cse31))) (or (< 100 (select (select .cse27 .cse28) (select (select .cse29 .cse30) .cse31))) (forall ((v_ArrVal_183 (Array Int Int))) (< (select (select (store .cse27 .cse28 v_ArrVal_183) c_main_~m~0.base) c_main_~m~0.offset) 110))))))))) (or (< 100 .cse0) (let ((.cse33 (store |c_#memory_int| .cse10 (store .cse60 .cse61 (+ .cse0 (select (select |c_#memory_int| c_main_~list~0.base) c_main_~list~0.offset)))))) (and (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int))) (< 90 (select (select (let ((.cse39 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180))) (let ((.cse38 (select (select .cse39 c_main_~list~0.base) .cse11)) (.cse41 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse37 (select (select .cse41 c_main_~list~0.base) .cse11)) (.cse40 (+ 4 .cse38))) (let ((.cse34 (select (select .cse41 .cse37) .cse40))) (store .cse33 .cse34 (let ((.cse35 (select .cse33 .cse34)) (.cse36 (select (select .cse39 .cse37) .cse40))) (store .cse35 .cse36 (+ (select .cse35 .cse36) (* (- 1) (select (select .cse33 .cse37) .cse38)))))))))) c_main_~m~0.base) c_main_~m~0.offset))) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int))) (let ((.cse43 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180)) (.cse46 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse44 (select (select .cse46 c_main_~list~0.base) .cse11)) (.cse45 (+ 4 (select (select .cse43 c_main_~list~0.base) .cse11)))) (let ((.cse42 (select (select .cse46 .cse44) .cse45))) (or (forall ((v_ArrVal_183 (Array Int Int))) (< 90 (select (select (store .cse33 .cse42 v_ArrVal_183) c_main_~m~0.base) c_main_~m~0.offset))) (< 100 (select (select .cse33 .cse42) (select (select .cse43 .cse44) .cse45)))))))) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int))) (let ((.cse48 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180)) (.cse51 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse49 (select (select .cse51 c_main_~list~0.base) .cse11)) (.cse50 (+ 4 (select (select .cse48 c_main_~list~0.base) .cse11)))) (let ((.cse47 (select (select .cse51 .cse49) .cse50))) (or (< 100 (select (select .cse33 .cse47) (select (select .cse48 .cse49) .cse50))) (forall ((v_ArrVal_183 (Array Int Int))) (< (select (select (store .cse33 .cse47 v_ArrVal_183) c_main_~m~0.base) c_main_~m~0.offset) 110))))))) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int))) (< (select (select (let ((.cse57 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180))) (let ((.cse56 (select (select .cse57 c_main_~list~0.base) .cse11)) (.cse59 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse55 (select (select .cse59 c_main_~list~0.base) .cse11)) (.cse58 (+ 4 .cse56))) (let ((.cse52 (select (select .cse59 .cse55) .cse58))) (store .cse33 .cse52 (let ((.cse53 (select .cse33 .cse52)) (.cse54 (select (select .cse57 .cse55) .cse58))) (store .cse53 .cse54 (+ (select .cse53 .cse54) (* (- 1) (select (select .cse33 .cse55) .cse56)))))))))) c_main_~m~0.base) c_main_~m~0.offset) 110)))))))))) is different from false [2023-03-31 22:56:30,574 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse62 (+ c_main_~head~0.offset 4))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| c_main_~head~0.base) .cse62))) (let ((.cse60 (select |c_#memory_int| .cse10)) (.cse61 (select (select |c_#memory_$Pointer$.offset| c_main_~head~0.base) .cse62))) (let ((.cse11 (+ c_main_~head~0.offset 8)) (.cse0 (select .cse60 .cse61))) (and (or (<= .cse0 100) (and (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (< (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180))) (let ((.cse6 (select (select .cse7 c_main_~head~0.base) .cse11)) (.cse9 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse5 (select (select .cse9 c_main_~head~0.base) .cse11)) (.cse8 (+ .cse6 4))) (let ((.cse1 (store |c_#memory_int| .cse10 v_ArrVal_178)) (.cse2 (select (select .cse9 .cse5) .cse8))) (store .cse1 .cse2 (let ((.cse3 (select .cse1 .cse2)) (.cse4 (select (select .cse7 .cse5) .cse8))) (store .cse3 .cse4 (+ (* (- 1) (select (select .cse1 .cse5) .cse6)) (select .cse3 .cse4))))))))) c_main_~m~0.base) c_main_~m~0.offset) 110)) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (< 90 (select (select (let ((.cse18 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180))) (let ((.cse17 (select (select .cse18 c_main_~head~0.base) .cse11)) (.cse20 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse16 (select (select .cse20 c_main_~head~0.base) .cse11)) (.cse19 (+ .cse17 4))) (let ((.cse12 (store |c_#memory_int| .cse10 v_ArrVal_178)) (.cse13 (select (select .cse20 .cse16) .cse19))) (store .cse12 .cse13 (let ((.cse14 (select .cse12 .cse13)) (.cse15 (select (select .cse18 .cse16) .cse19))) (store .cse14 .cse15 (+ (* (- 1) (select (select .cse12 .cse16) .cse17)) (select .cse14 .cse15))))))))) c_main_~m~0.base) c_main_~m~0.offset))) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (let ((.cse23 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180)) (.cse26 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse24 (select (select .cse26 c_main_~head~0.base) .cse11)) (.cse25 (+ (select (select .cse23 c_main_~head~0.base) .cse11) 4))) (let ((.cse21 (store |c_#memory_int| .cse10 v_ArrVal_178)) (.cse22 (select (select .cse26 .cse24) .cse25))) (or (forall ((v_ArrVal_183 (Array Int Int))) (< 90 (select (select (store .cse21 .cse22 v_ArrVal_183) c_main_~m~0.base) c_main_~m~0.offset))) (< 100 (select (select .cse21 .cse22) (select (select .cse23 .cse24) .cse25)))))))) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (let ((.cse29 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180)) (.cse32 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse30 (select (select .cse32 c_main_~head~0.base) .cse11)) (.cse31 (+ (select (select .cse29 c_main_~head~0.base) .cse11) 4))) (let ((.cse27 (store |c_#memory_int| .cse10 v_ArrVal_178)) (.cse28 (select (select .cse32 .cse30) .cse31))) (or (< 100 (select (select .cse27 .cse28) (select (select .cse29 .cse30) .cse31))) (forall ((v_ArrVal_183 (Array Int Int))) (< (select (select (store .cse27 .cse28 v_ArrVal_183) c_main_~m~0.base) c_main_~m~0.offset) 110))))))))) (or (< 100 .cse0) (let ((.cse33 (store |c_#memory_int| .cse10 (store .cse60 .cse61 (+ .cse0 (select (select |c_#memory_int| c_main_~head~0.base) c_main_~head~0.offset)))))) (and (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int))) (< 90 (select (select (let ((.cse39 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180))) (let ((.cse38 (select (select .cse39 c_main_~head~0.base) .cse11)) (.cse41 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse37 (select (select .cse41 c_main_~head~0.base) .cse11)) (.cse40 (+ .cse38 4))) (let ((.cse34 (select (select .cse41 .cse37) .cse40))) (store .cse33 .cse34 (let ((.cse35 (select .cse33 .cse34)) (.cse36 (select (select .cse39 .cse37) .cse40))) (store .cse35 .cse36 (+ (select .cse35 .cse36) (* (- 1) (select (select .cse33 .cse37) .cse38)))))))))) c_main_~m~0.base) c_main_~m~0.offset))) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int))) (let ((.cse43 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180)) (.cse46 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse44 (select (select .cse46 c_main_~head~0.base) .cse11)) (.cse45 (+ (select (select .cse43 c_main_~head~0.base) .cse11) 4))) (let ((.cse42 (select (select .cse46 .cse44) .cse45))) (or (forall ((v_ArrVal_183 (Array Int Int))) (< (select (select (store .cse33 .cse42 v_ArrVal_183) c_main_~m~0.base) c_main_~m~0.offset) 110)) (< 100 (select (select .cse33 .cse42) (select (select .cse43 .cse44) .cse45)))))))) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int))) (let ((.cse48 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180)) (.cse51 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse49 (select (select .cse51 c_main_~head~0.base) .cse11)) (.cse50 (+ (select (select .cse48 c_main_~head~0.base) .cse11) 4))) (let ((.cse47 (select (select .cse51 .cse49) .cse50))) (or (forall ((v_ArrVal_183 (Array Int Int))) (< 90 (select (select (store .cse33 .cse47 v_ArrVal_183) c_main_~m~0.base) c_main_~m~0.offset))) (< 100 (select (select .cse33 .cse47) (select (select .cse48 .cse49) .cse50)))))))) (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_177 (Array Int Int))) (< (select (select (let ((.cse57 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_180))) (let ((.cse56 (select (select .cse57 c_main_~head~0.base) .cse11)) (.cse59 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_177))) (let ((.cse55 (select (select .cse59 c_main_~head~0.base) .cse11)) (.cse58 (+ .cse56 4))) (let ((.cse52 (select (select .cse59 .cse55) .cse58))) (store .cse33 .cse52 (let ((.cse53 (select .cse33 .cse52)) (.cse54 (select (select .cse57 .cse55) .cse58))) (store .cse53 .cse54 (+ (select .cse53 .cse54) (* (- 1) (select (select .cse33 .cse55) .cse56)))))))))) c_main_~m~0.base) c_main_~m~0.offset) 110)))))))))) is different from false [2023-03-31 22:56:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-03-31 22:56:30,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415872282] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:56:30,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606556688] [2023-03-31 22:56:30,755 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-03-31 22:56:30,755 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:56:30,757 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:56:30,760 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:56:30,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:56:30,791 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 23 for LOIs [2023-03-31 22:56:31,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 22:56:31,014 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:56:31,847 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '215#(and (= main_~head~0.offset 0) (= main_~m~0.offset 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:56:31,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:56:31,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:56:31,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-03-31 22:56:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330858157] [2023-03-31 22:56:31,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:56:31,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 22:56:31,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:56:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 22:56:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=257, Unknown=2, NotChecked=66, Total=380 [2023-03-31 22:56:31,849 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:32,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:56:32,342 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-03-31 22:56:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 22:56:32,343 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-03-31 22:56:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:56:32,343 INFO L225 Difference]: With dead ends: 23 [2023-03-31 22:56:32,343 INFO L226 Difference]: Without dead ends: 14 [2023-03-31 22:56:32,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=422, Unknown=2, NotChecked=86, Total=600 [2023-03-31 22:56:32,344 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:56:32,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 79 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2023-03-31 22:56:32,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-03-31 22:56:32,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-03-31 22:56:32,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-03-31 22:56:32,346 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 13 [2023-03-31 22:56:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:56:32,346 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-03-31 22:56:32,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:56:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-03-31 22:56:32,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-03-31 22:56:32,347 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:56:32,347 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:56:32,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 22:56:32,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:56:32,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:56:32,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:56:32,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1599407550, now seen corresponding path program 1 times [2023-03-31 22:56:32,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:56:32,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881259018] [2023-03-31 22:56:32,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:32,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:56:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:33,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:56:33,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881259018] [2023-03-31 22:56:33,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881259018] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:56:33,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914296914] [2023-03-31 22:56:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:56:33,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:56:33,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:56:33,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:56:33,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 22:56:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:56:33,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 69 conjunts are in the unsatisfiable core [2023-03-31 22:56:33,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:56:33,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 22:56:33,250 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 22:56:33,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-03-31 22:56:33,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 22:56:33,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 29 [2023-03-31 22:56:33,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2023-03-31 22:56:33,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 22 [2023-03-31 22:56:33,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 22:56:33,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2023-03-31 22:56:33,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2023-03-31 22:56:33,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,483 INFO L321 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2023-03-31 22:56:33,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 31 [2023-03-31 22:56:33,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-03-31 22:56:33,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2023-03-31 22:56:33,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-03-31 22:56:33,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2023-03-31 22:56:33,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:56:33,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-03-31 22:56:33,614 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-03-31 22:56:33,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 117 [2023-03-31 22:56:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:33,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:56:33,967 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:56:33,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 33 [2023-03-31 22:56:33,982 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 22:56:33,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 33 [2023-03-31 22:56:44,441 WARN L223 SmtUtils]: Spent 9.77s on a formula simplification. DAG size of input: 133 DAG size of output: 120 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-03-31 22:56:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:56:44,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914296914] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:56:44,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2011344507] [2023-03-31 22:56:44,921 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-03-31 22:56:44,921 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:56:44,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:56:44,921 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:56:44,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:56:44,943 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 23 for LOIs [2023-03-31 22:56:45,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 22:56:45,191 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:56:52,350 WARN L223 SmtUtils]: Spent 7.07s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-03-31 22:57:00,653 WARN L223 SmtUtils]: Spent 7.24s on a formula simplification that was a NOOP. DAG size: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-03-31 22:57:00,654 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '374#(and (= main_~head~0.offset 0) (exists ((|v_main_#t~mem18_29| Int) (|v_main_#t~mem18_28| Int) (|v_main_#t~short19_18| Bool)) (and (or (and (= |v_main_#t~mem18_29| |v_main_#t~mem18_28|) (not |v_main_#t~short19_18|)) (and |v_main_#t~short19_18| (<= 110 |v_main_#t~mem18_29|) (= (select (select |#memory_int| main_~m~0.base) 0) |v_main_#t~mem18_29|))) (or (and (< 90 (select (select |#memory_int| main_~m~0.base) 0)) |v_main_#t~short19_18|) (and (<= (select (select |#memory_int| main_~m~0.base) 0) 90) (not |v_main_#t~short19_18|))))) (or (exists ((|v_#memory_$Pointer$.base_74| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_74| (Array Int (Array Int Int))) (|v_#memory_int_81| (Array Int (Array Int Int)))) (and (<= (select (select |v_#memory_int_81| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4)) 100) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_74| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4) (store (select |v_#memory_$Pointer$.offset_74| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4) (select (select |#memory_$Pointer$.offset| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4))))) (= |#memory_int| (store |v_#memory_int_81| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4) (store (select |v_#memory_int_81| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4) (+ (select (select |v_#memory_int_81| main_~head~0.base) 0) (select (select |v_#memory_int_81| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4)))))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_74| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4) (store (select |v_#memory_$Pointer$.base_74| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4) (select (select |#memory_$Pointer$.base| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4))))))) (exists ((|v_#memory_$Pointer$.base_74| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_74| (Array Int (Array Int Int))) (|v_#memory_int_81| (Array Int (Array Int Int)))) (and (< 100 (select (select |v_#memory_int_81| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4))) (= |#memory_int| (store |v_#memory_int_81| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4) (store (select |v_#memory_int_81| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4) (+ (select (select |v_#memory_int_81| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4)) (* (- 1) (select (select |v_#memory_int_81| main_~head~0.base) 0)))))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_74| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4) (store (select |v_#memory_$Pointer$.offset_74| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4) (select (select |#memory_$Pointer$.offset| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4))))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_74| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4) (store (select |v_#memory_$Pointer$.base_74| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4) (select (select |#memory_$Pointer$.base| (select (select |v_#memory_$Pointer$.base_74| main_~head~0.base) 4)) (select (select |v_#memory_$Pointer$.offset_74| main_~head~0.base) 4)))))))) (= main_~m~0.offset 0) (not (= main_~head~0.base 0)) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) 8) main_~list~0.base) (= |#NULL.offset| 0) (= main_~list~0.offset (select (select |#memory_$Pointer$.offset| main_~head~0.base) 8)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 22:57:00,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:57:00,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:57:00,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-03-31 22:57:00,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321955353] [2023-03-31 22:57:00,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:57:00,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 22:57:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:57:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 22:57:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=358, Unknown=3, NotChecked=0, Total=420 [2023-03-31 22:57:00,656 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:57:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:57:01,012 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2023-03-31 22:57:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:57:01,013 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-03-31 22:57:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:57:01,013 INFO L225 Difference]: With dead ends: 18 [2023-03-31 22:57:01,013 INFO L226 Difference]: Without dead ends: 16 [2023-03-31 22:57:01,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=70, Invalid=389, Unknown=3, NotChecked=0, Total=462 [2023-03-31 22:57:01,014 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 22:57:01,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 22:57:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-03-31 22:57:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-03-31 22:57:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:57:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-03-31 22:57:01,017 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2023-03-31 22:57:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:57:01,017 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-03-31 22:57:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:57:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-03-31 22:57:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 22:57:01,017 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:57:01,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:57:01,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 22:57:01,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-03-31 22:57:01,224 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:57:01,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:57:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash 567783322, now seen corresponding path program 1 times [2023-03-31 22:57:01,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:57:01,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326374613] [2023-03-31 22:57:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:57:01,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:57:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:57:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:57:03,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:57:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326374613] [2023-03-31 22:57:03,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326374613] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:57:03,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678478072] [2023-03-31 22:57:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:57:03,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:57:03,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:57:03,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:57:03,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 22:57:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:57:04,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 89 conjunts are in the unsatisfiable core [2023-03-31 22:57:04,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:57:04,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 22:57:04,268 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 22:57:04,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-03-31 22:57:04,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 22:57:04,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:57:04,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 29 [2023-03-31 22:57:04,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2023-03-31 22:57:04,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 22:57:04,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 22 [2023-03-31 22:57:04,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2023-03-31 22:57:04,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2023-03-31 22:57:05,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:57:05,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:57:05,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2023-03-31 22:57:05,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-03-31 22:57:05,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:57:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:57:05,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2023-03-31 22:57:05,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-03-31 22:57:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:57:05,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 22:57:05,519 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 22:57:05,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 61 [2023-03-31 22:57:05,666 INFO L321 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2023-03-31 22:57:05,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 163 treesize of output 165 [2023-03-31 22:57:07,460 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-03-31 22:57:07,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 318 treesize of output 287 [2023-03-31 22:57:07,621 INFO L321 Elim1Store]: treesize reduction 176, result has 17.4 percent of original size [2023-03-31 22:57:07,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 304 treesize of output 266 [2023-03-31 22:57:07,853 INFO L321 Elim1Store]: treesize reduction 296, result has 6.9 percent of original size [2023-03-31 22:57:07,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 264 treesize of output 259 [2023-03-31 22:57:07,908 INFO L321 Elim1Store]: treesize reduction 55, result has 5.2 percent of original size [2023-03-31 22:57:07,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 231 treesize of output 211 [2023-03-31 22:57:08,024 INFO L321 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-03-31 22:57:08,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 153 [2023-03-31 22:57:09,637 INFO L321 Elim1Store]: treesize reduction 73, result has 41.6 percent of original size [2023-03-31 22:57:09,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 322 treesize of output 328 [2023-03-31 22:57:09,796 INFO L217 Elim1Store]: Index analysis took 140 ms [2023-03-31 22:57:10,439 INFO L321 Elim1Store]: treesize reduction 526, result has 19.7 percent of original size [2023-03-31 22:57:10,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 262 treesize of output 368 [2023-03-31 22:57:10,862 INFO L321 Elim1Store]: treesize reduction 89, result has 42.6 percent of original size [2023-03-31 22:57:10,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 223 treesize of output 261 [2023-03-31 22:57:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:57:11,028 INFO L327 TraceCheckSpWp]: Computing backward predicates...