/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 OctagonDomain -i ../sv-benchmarks/c/array-patterns/array3_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 15:11:44,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 15:11:44,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 15:11:44,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 15:11:44,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 15:11:44,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 15:11:44,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 15:11:44,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 15:11:44,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 15:11:44,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 15:11:44,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 15:11:44,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 15:11:44,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 15:11:44,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 15:11:44,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 15:11:44,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 15:11:44,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 15:11:44,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 15:11:44,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 15:11:44,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 15:11:44,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 15:11:44,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 15:11:44,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 15:11:44,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 15:11:44,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 15:11:44,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 15:11:44,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 15:11:44,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 15:11:44,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 15:11:44,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 15:11:44,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 15:11:44,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 15:11:44,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 15:11:44,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 15:11:44,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 15:11:44,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 15:11:44,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 15:11:44,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 15:11:44,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 15:11:44,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 15:11:44,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 15:11:44,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 15:11:44,592 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 15:11:44,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 15:11:44,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 15:11:44,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 15:11:44,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 15:11:44,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 15:11:44,594 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 15:11:44,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 15:11:44,594 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 15:11:44,594 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 15:11:44,595 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 15:11:44,595 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 15:11:44,595 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 15:11:44,595 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 15:11:44,595 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 15:11:44,595 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 15:11:44,596 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 15:11:44,596 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 15:11:44,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 15:11:44,596 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 15:11:44,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 15:11:44,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 15:11:44,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 15:11:44,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 15:11:44,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 15:11:44,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 15:11:44,598 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 15:11:44,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 15:11:44,598 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 15:11:44,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 15:11:44,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 15:11:44,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 15:11:44,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 15:11:44,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 15:11:44,599 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 15:11:44,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 15:11:44,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 15:11:44,600 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 15:11:44,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 15:11:44,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 15:11:44,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 15:11:44,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 15:11:44,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 15:11:44,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 15:11:44,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 15:11:44,766 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 15:11:44,767 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 15:11:44,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array3_pattern.c [2023-04-02 15:11:45,726 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 15:11:45,920 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 15:11:45,921 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array3_pattern.c [2023-04-02 15:11:45,925 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24f4d555/998665b1aba541ef8febc9fa6fe9d2ac/FLAG9272854b0 [2023-04-02 15:11:45,939 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24f4d555/998665b1aba541ef8febc9fa6fe9d2ac [2023-04-02 15:11:45,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 15:11:45,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 15:11:45,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 15:11:45,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 15:11:45,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 15:11:45,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 03:11:45" (1/1) ... [2023-04-02 15:11:45,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164b9772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:45, skipping insertion in model container [2023-04-02 15:11:45,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 03:11:45" (1/1) ... [2023-04-02 15:11:45,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 15:11:45,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 15:11:46,051 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/array-patterns/array3_pattern.c[1393,1406] [2023-04-02 15:11:46,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 15:11:46,071 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 15:11:46,078 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/array-patterns/array3_pattern.c[1393,1406] [2023-04-02 15:11:46,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 15:11:46,093 INFO L208 MainTranslator]: Completed translation [2023-04-02 15:11:46,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46 WrapperNode [2023-04-02 15:11:46,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 15:11:46,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 15:11:46,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 15:11:46,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 15:11:46,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46" (1/1) ... [2023-04-02 15:11:46,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46" (1/1) ... [2023-04-02 15:11:46,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46" (1/1) ... [2023-04-02 15:11:46,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46" (1/1) ... [2023-04-02 15:11:46,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46" (1/1) ... [2023-04-02 15:11:46,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46" (1/1) ... [2023-04-02 15:11:46,114 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46" (1/1) ... [2023-04-02 15:11:46,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46" (1/1) ... [2023-04-02 15:11:46,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 15:11:46,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 15:11:46,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 15:11:46,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 15:11:46,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46" (1/1) ... [2023-04-02 15:11:46,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 15:11:46,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:11:46,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 15:11:46,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 15:11:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 15:11:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 15:11:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 15:11:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 15:11:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 15:11:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2023-04-02 15:11:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 15:11:46,167 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 15:11:46,167 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 15:11:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 15:11:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 15:11:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 15:11:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 15:11:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 15:11:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-04-02 15:11:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure square [2023-04-02 15:11:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 15:11:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 15:11:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 15:11:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 15:11:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 15:11:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 15:11:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 15:11:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 15:11:46,253 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 15:11:46,254 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 15:11:46,410 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 15:11:46,435 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 15:11:46,436 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-02 15:11:46,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 03:11:46 BoogieIcfgContainer [2023-04-02 15:11:46,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 15:11:46,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 15:11:46,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 15:11:46,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 15:11:46,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 03:11:45" (1/3) ... [2023-04-02 15:11:46,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726e3b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 03:11:46, skipping insertion in model container [2023-04-02 15:11:46,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:11:46" (2/3) ... [2023-04-02 15:11:46,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726e3b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 03:11:46, skipping insertion in model container [2023-04-02 15:11:46,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 03:11:46" (3/3) ... [2023-04-02 15:11:46,449 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2023-04-02 15:11:46,461 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 15:11:46,461 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 15:11:46,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 15:11:46,495 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;@411c3493, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 15:11:46,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 15:11:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 15:11:46,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 15:11:46,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:11:46,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:11:46,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:11:46,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:11:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash -896646631, now seen corresponding path program 1 times [2023-04-02 15:11:46,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:11:46,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732711552] [2023-04-02 15:11:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:11:46,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:11:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:11:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 15:11:46,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:11:46,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732711552] [2023-04-02 15:11:46,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732711552] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:11:46,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:11:46,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 15:11:46,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493941263] [2023-04-02 15:11:46,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:11:46,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 15:11:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:11:46,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 15:11:46,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 15:11:46,648 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 15:11:46,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:11:46,671 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2023-04-02 15:11:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 15:11:46,673 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-04-02 15:11:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:11:46,677 INFO L225 Difference]: With dead ends: 52 [2023-04-02 15:11:46,687 INFO L226 Difference]: Without dead ends: 27 [2023-04-02 15:11:46,694 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 [2023-04-02 15:11:46,696 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 15:11:46,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 15:11:46,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-04-02 15:11:46,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-04-02 15:11:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 15:11:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-04-02 15:11:46,721 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2023-04-02 15:11:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:11:46,722 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-04-02 15:11:46,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 15:11:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-04-02 15:11:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 15:11:46,723 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:11:46,723 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:11:46,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 15:11:46,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:11:46,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:11:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1722802257, now seen corresponding path program 1 times [2023-04-02 15:11:46,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:11:46,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588809894] [2023-04-02 15:11:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:11:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:11:46,745 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 15:11:46,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141606214] [2023-04-02 15:11:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:11:46,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:11:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:11:46,747 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) [2023-04-02 15:11:46,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 15:11:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:11:46,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-02 15:11:46,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:11:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 15:11:46,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 15:11:46,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:11:46,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588809894] [2023-04-02 15:11:46,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 15:11:46,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141606214] [2023-04-02 15:11:46,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141606214] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:11:46,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:11:46,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 15:11:46,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569452320] [2023-04-02 15:11:46,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:11:46,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 15:11:46,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:11:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 15:11:46,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 15:11:46,937 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 15:11:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:11:46,984 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-04-02 15:11:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 15:11:46,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-04-02 15:11:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:11:46,986 INFO L225 Difference]: With dead ends: 35 [2023-04-02 15:11:46,986 INFO L226 Difference]: Without dead ends: 30 [2023-04-02 15:11:46,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 15:11:46,987 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 15:11:46,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 15:11:46,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-04-02 15:11:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-04-02 15:11:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 15:11:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-04-02 15:11:46,998 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 22 [2023-04-02 15:11:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:11:46,998 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-04-02 15:11:46,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 15:11:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-04-02 15:11:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-02 15:11:46,999 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:11:46,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:11:47,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 15:11:47,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:11:47,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:11:47,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:11:47,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1937196108, now seen corresponding path program 1 times [2023-04-02 15:11:47,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:11:47,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375799020] [2023-04-02 15:11:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:11:47,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:11:47,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 15:11:47,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034076052] [2023-04-02 15:11:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:11:47,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:11:47,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:11:47,256 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) [2023-04-02 15:11:47,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 15:11:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:11:47,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 15:11:47,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:11:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 15:11:47,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 15:11:47,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:11:47,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375799020] [2023-04-02 15:11:47,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 15:11:47,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034076052] [2023-04-02 15:11:47,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034076052] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:11:47,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 15:11:47,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 15:11:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178560830] [2023-04-02 15:11:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:11:47,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 15:11:47,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:11:47,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 15:11:47,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 15:11:47,389 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 15:11:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:11:47,461 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2023-04-02 15:11:47,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 15:11:47,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 31 [2023-04-02 15:11:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:11:47,462 INFO L225 Difference]: With dead ends: 53 [2023-04-02 15:11:47,462 INFO L226 Difference]: Without dead ends: 33 [2023-04-02 15:11:47,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-02 15:11:47,465 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 10 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 15:11:47,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 69 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 15:11:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-04-02 15:11:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2023-04-02 15:11:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 15:11:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-04-02 15:11:47,476 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 31 [2023-04-02 15:11:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:11:47,476 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-04-02 15:11:47,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 15:11:47,477 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-04-02 15:11:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-02 15:11:47,477 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:11:47,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:11:47,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 15:11:47,682 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,SelfDestructingSolverStorable2 [2023-04-02 15:11:47,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:11:47,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:11:47,683 INFO L85 PathProgramCache]: Analyzing trace with hash -441906147, now seen corresponding path program 1 times [2023-04-02 15:11:47,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:11:47,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183492447] [2023-04-02 15:11:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:11:47,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:11:47,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 15:11:47,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974450291] [2023-04-02 15:11:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:11:47,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:11:47,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:11:47,708 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) [2023-04-02 15:11:47,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 15:11:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:11:47,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 77 conjunts are in the unsatisfiable core [2023-04-02 15:11:47,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:11:47,860 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 [2023-04-02 15:11:47,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:11:47,898 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 19 treesize of output 23 [2023-04-02 15:11:47,903 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 20 treesize of output 20 [2023-04-02 15:11:47,907 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 [2023-04-02 15:11:47,913 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 [2023-04-02 15:11:48,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:11:48,227 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 159 treesize of output 150 [2023-04-02 15:11:48,241 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 150 treesize of output 142 [2023-04-02 15:11:48,252 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:11:48,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 122 treesize of output 183 [2023-04-02 15:11:48,433 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:11:48,434 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 24 [2023-04-02 15:11:48,524 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-04-02 15:11:49,326 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:11:49,327 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:11:49,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 28 [2023-04-02 15:11:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 15:11:58,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:12:22,319 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse18 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse15 (select |c_#memory_int| |c_main_~#array1~0.base|)) (.cse8 (* .cse18 4))) (and (forall ((v_z_11 Int)) (let ((.cse17 (+ .cse18 v_z_11))) (or (<= 4294967296 v_z_11) (forall ((v_y_11 Int)) (let ((.cse14 (+ (* v_z_11 4294967295) (* v_y_11 4294967296)))) (or (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse16 (+ (* 17179869184 v_y_11) |c_main_~#array1~0.offset| (* 17179869180 v_z_11)))) (store .cse15 .cse16 (+ (select .cse15 .cse16) (* c_main_~num~0 c_main_~num~0 .cse14)))))) (.cse4 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|)) (.cse6 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|)) (.cse7 (* c_main_~num~0 .cse14)) (.cse9 (* v_z_11 4))) (or (let ((.cse2 (let ((.cse5 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 .cse9))) (store .cse4 .cse5 (+ (select .cse6 .cse5) .cse7))))) (= (+ (let ((.cse0 (select (select (store .cse1 |c_main_~#array2~0.base| .cse2) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse0 .cse0)) c_main_~sum1~0) (+ (let ((.cse3 (select .cse2 |c_main_~#array2~0.offset|))) (* .cse3 .cse3)) c_main_~sum2~0))) (let ((.cse11 (let ((.cse13 (+ |c_main_~#array2~0.offset| .cse8 .cse9))) (store .cse4 .cse13 (+ (select .cse6 .cse13) .cse7))))) (= (+ c_main_~sum1~0 (let ((.cse10 (select (select (store .cse1 |c_main_~#array2~0.base| .cse11) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse10 .cse10))) (+ (let ((.cse12 (select .cse11 |c_main_~#array2~0.offset|))) (* .cse12 .cse12)) c_main_~sum2~0)))))) (<= c_~ARR_SIZE~0 .cse14) (< .cse14 0)))) (< 6442450943 .cse17) (< .cse17 4294967296)))) (forall ((v_z_12 Int)) (or (<= 4294967296 v_z_12) (<= (+ .cse18 v_z_12) 6442450943) (forall ((v_y_12 Int) (v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse19 (+ (* v_y_12 4294967296) (* v_z_12 4294967295)))) (or (<= c_~ARR_SIZE~0 .cse19) (let ((.cse21 (let ((.cse24 (+ |c_main_~#array2~0.offset| .cse8 (- 34359738368) (* v_z_12 4)))) (store (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|) .cse24 (+ (select (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|) .cse24) (* c_main_~num~0 .cse19)))))) (= (+ c_main_~sum2~0 (let ((.cse20 (select .cse21 |c_main_~#array2~0.offset|))) (* .cse20 .cse20))) (+ c_main_~sum1~0 (let ((.cse22 (select (select (store (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse23 (+ |c_main_~#array1~0.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)))) (store .cse15 .cse23 (+ (* c_main_~num~0 c_main_~num~0 .cse19) (select .cse15 .cse23))))) |c_main_~#array2~0.base| .cse21) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse22 .cse22))))) (< .cse19 0)))))) (forall ((v_z_12 Int)) (or (<= 4294967296 v_z_12) (forall ((v_y_12 Int)) (let ((.cse38 (+ (* v_y_12 4294967296) (* v_z_12 4294967295)))) (or (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse28 (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse39 (+ |c_main_~#array1~0.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)))) (store .cse15 .cse39 (+ (* c_main_~num~0 c_main_~num~0 .cse38) (select .cse15 .cse39)))))) (.cse29 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|)) (.cse31 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|)) (.cse32 (* c_main_~num~0 .cse38)) (.cse33 (* v_z_12 4))) (or (let ((.cse26 (let ((.cse30 (+ |c_main_~#array2~0.offset| .cse8 (- 34359738368) .cse33))) (store .cse29 .cse30 (+ (select .cse31 .cse30) .cse32))))) (= (+ c_main_~sum2~0 (let ((.cse25 (select .cse26 |c_main_~#array2~0.offset|))) (* .cse25 .cse25))) (+ c_main_~sum1~0 (let ((.cse27 (select (select (store .cse28 |c_main_~#array2~0.base| .cse26) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse27 .cse27))))) (let ((.cse35 (let ((.cse37 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 .cse33))) (store .cse29 .cse37 (+ (select .cse31 .cse37) .cse32))))) (= (+ (let ((.cse34 (select .cse35 |c_main_~#array2~0.offset|))) (* .cse34 .cse34)) c_main_~sum2~0) (+ (let ((.cse36 (select (select (store .cse28 |c_main_~#array2~0.base| .cse35) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse36 .cse36)) c_main_~sum1~0)))))) (<= c_~ARR_SIZE~0 .cse38) (< .cse38 0)))) (<= (+ .cse18 v_z_12) 6442450943))) (forall ((v_z_12 Int)) (let ((.cse40 (+ .cse18 v_z_12))) (or (<= 4294967296 .cse40) (< v_z_12 0) (forall ((v_y_12 Int) (v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse41 (+ (* v_y_12 4294967296) (* v_z_12 4294967295)))) (or (<= c_~ARR_SIZE~0 .cse41) (< .cse41 0) (let ((.cse43 (let ((.cse46 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 (* v_z_12 4)))) (store (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|) .cse46 (+ (select (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|) .cse46) (* c_main_~num~0 .cse41)))))) (= (+ (let ((.cse42 (select .cse43 |c_main_~#array2~0.offset|))) (* .cse42 .cse42)) c_main_~sum2~0) (+ (let ((.cse44 (select (select (store (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse45 (+ |c_main_~#array1~0.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)))) (store .cse15 .cse45 (+ (* c_main_~num~0 c_main_~num~0 .cse41) (select .cse15 .cse45))))) |c_main_~#array2~0.base| .cse43) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse44 .cse44)) c_main_~sum1~0)))))) (<= .cse40 2147483647)))) (forall ((v_z_12 Int)) (let ((.cse47 (+ .cse18 v_z_12))) (or (<= 4294967296 .cse47) (forall ((v_y_12 Int)) (let ((.cse61 (+ (* v_y_12 4294967296) (* v_z_12 4294967295)))) (or (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse51 (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse62 (+ |c_main_~#array1~0.offset| (* 17179869180 v_z_12) (* 17179869184 v_y_12)))) (store .cse15 .cse62 (+ (* c_main_~num~0 c_main_~num~0 .cse61) (select .cse15 .cse62)))))) (.cse52 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|)) (.cse54 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|)) (.cse55 (* c_main_~num~0 .cse61)) (.cse56 (* v_z_12 4))) (or (let ((.cse49 (let ((.cse53 (+ |c_main_~#array2~0.offset| .cse8 (- 34359738368) .cse56))) (store .cse52 .cse53 (+ (select .cse54 .cse53) .cse55))))) (= (+ c_main_~sum2~0 (let ((.cse48 (select .cse49 |c_main_~#array2~0.offset|))) (* .cse48 .cse48))) (+ c_main_~sum1~0 (let ((.cse50 (select (select (store .cse51 |c_main_~#array2~0.base| .cse49) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse50 .cse50))))) (let ((.cse58 (let ((.cse60 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 .cse56))) (store .cse52 .cse60 (+ (select .cse54 .cse60) .cse55))))) (= (+ (let ((.cse57 (select .cse58 |c_main_~#array2~0.offset|))) (* .cse57 .cse57)) c_main_~sum2~0) (+ (let ((.cse59 (select (select (store .cse51 |c_main_~#array2~0.base| .cse58) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse59 .cse59)) c_main_~sum1~0)))))) (<= c_~ARR_SIZE~0 .cse61) (< .cse61 0)))) (< v_z_12 0) (<= .cse47 2147483647)))) (forall ((v_z_11 Int)) (let ((.cse63 (+ .cse18 v_z_11))) (or (<= 4294967296 v_z_11) (< 6442450943 .cse63) (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int)) (v_y_11 Int)) (let ((.cse66 (+ (* v_z_11 4294967295) (* v_y_11 4294967296)))) (or (let ((.cse67 (let ((.cse69 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 (* v_z_11 4)))) (store (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|) .cse69 (+ (select (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|) .cse69) (* c_main_~num~0 .cse66)))))) (= (+ (let ((.cse64 (select (select (store (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse65 (+ (* 17179869184 v_y_11) |c_main_~#array1~0.offset| (* 17179869180 v_z_11)))) (store .cse15 .cse65 (+ (select .cse15 .cse65) (* c_main_~num~0 c_main_~num~0 .cse66))))) |c_main_~#array2~0.base| .cse67) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse64 .cse64)) c_main_~sum1~0) (+ (let ((.cse68 (select .cse67 |c_main_~#array2~0.offset|))) (* .cse68 .cse68)) c_main_~sum2~0))) (<= c_~ARR_SIZE~0 .cse66) (< .cse66 0)))) (< .cse63 4294967296)))) (forall ((v_z_11 Int)) (or (forall ((v_y_11 Int)) (let ((.cse83 (+ (* v_z_11 4294967295) (* v_y_11 4294967296)))) (or (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (let ((.cse71 (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse84 (+ (* 17179869184 v_y_11) |c_main_~#array1~0.offset| (* 17179869180 v_z_11)))) (store .cse15 .cse84 (+ (select .cse15 .cse84) (* c_main_~num~0 c_main_~num~0 .cse83)))))) (.cse74 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|)) (.cse76 (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|)) (.cse77 (* c_main_~num~0 .cse83)) (.cse78 (* v_z_11 4))) (or (let ((.cse72 (let ((.cse75 (+ (- 17179869184) |c_main_~#array2~0.offset| .cse8 .cse78))) (store .cse74 .cse75 (+ (select .cse76 .cse75) .cse77))))) (= (+ (let ((.cse70 (select (select (store .cse71 |c_main_~#array2~0.base| .cse72) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse70 .cse70)) c_main_~sum1~0) (+ (let ((.cse73 (select .cse72 |c_main_~#array2~0.offset|))) (* .cse73 .cse73)) c_main_~sum2~0))) (let ((.cse80 (let ((.cse82 (+ |c_main_~#array2~0.offset| .cse8 .cse78))) (store .cse74 .cse82 (+ (select .cse76 .cse82) .cse77))))) (= (+ c_main_~sum1~0 (let ((.cse79 (select (select (store .cse71 |c_main_~#array2~0.base| .cse80) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse79 .cse79))) (+ (let ((.cse81 (select .cse80 |c_main_~#array2~0.offset|))) (* .cse81 .cse81)) c_main_~sum2~0)))))) (<= c_~ARR_SIZE~0 .cse83) (< .cse83 0)))) (< v_z_11 0) (< 2147483647 (+ .cse18 v_z_11)))) (forall ((v_z_11 Int)) (or (< v_z_11 0) (< 2147483647 (+ .cse18 v_z_11)) (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int)) (v_y_11 Int)) (let ((.cse85 (+ (* v_z_11 4294967295) (* v_y_11 4294967296)))) (or (<= c_~ARR_SIZE~0 .cse85) (let ((.cse88 (let ((.cse90 (+ |c_main_~#array2~0.offset| .cse8 (* v_z_11 4)))) (store (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_107) |c_main_~#array2~0.base|) .cse90 (+ (select (select (store |c_#memory_int| |c_main_~#array1~0.base| v_ArrVal_104) |c_main_~#array2~0.base|) .cse90) (* c_main_~num~0 .cse85)))))) (= (+ c_main_~sum1~0 (let ((.cse86 (select (select (store (store |c_#memory_int| |c_main_~#array1~0.base| (let ((.cse87 (+ (* 17179869184 v_y_11) |c_main_~#array1~0.offset| (* 17179869180 v_z_11)))) (store .cse15 .cse87 (+ (select .cse15 .cse87) (* c_main_~num~0 c_main_~num~0 .cse85))))) |c_main_~#array2~0.base| .cse88) |c_main_~#array1~0.base|) |c_main_~#array1~0.offset|))) (* .cse86 .cse86))) (+ (let ((.cse89 (select .cse88 |c_main_~#array2~0.offset|))) (* .cse89 .cse89)) c_main_~sum2~0))) (< .cse85 0))))))))) is different from true [2023-04-02 15:12:22,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:12:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183492447] [2023-04-02 15:12:22,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 15:12:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974450291] [2023-04-02 15:12:22,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974450291] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:12:22,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [968106315] [2023-04-02 15:12:22,340 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-04-02 15:12:22,341 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:12:22,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:12:22,356 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:12:22,356 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:12:22,405 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 22 for LOIs [2023-04-02 15:12:23,508 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2023-04-02 15:12:23,512 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2023-04-02 15:12:23,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 15:12:23,516 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 19 for LOIs [2023-04-02 15:12:23,517 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 15:12:51,596 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '728#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0) (= |#NULL.base| 0))' at error location [2023-04-02 15:12:51,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 15:12:51,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 15:12:51,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-04-02 15:12:51,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416592959] [2023-04-02 15:12:51,597 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 15:12:51,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 15:12:51,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:12:51,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 15:12:51,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=2689, Unknown=15, NotChecked=106, Total=3080 [2023-04-02 15:12:51,598 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 15:12:53,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:12:55,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:12:57,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:00,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:10,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:13,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:17,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:24,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:26,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:31,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:33,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:40,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:42,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:44,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:46,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:49,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:51,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:55,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:13:59,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:14:01,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:14:03,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:14:05,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:14:07,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:14:09,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:14:11,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:14:14,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-04-02 15:14:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:14:14,044 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2023-04-02 15:14:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-02 15:14:14,045 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 32 [2023-04-02 15:14:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:14:14,046 INFO L225 Difference]: With dead ends: 72 [2023-04-02 15:14:14,046 INFO L226 Difference]: Without dead ends: 67 [2023-04-02 15:14:14,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 82.9s TimeCoverageRelationStatistics Valid=504, Invalid=4454, Unknown=16, NotChecked=138, Total=5112 [2023-04-02 15:14:14,050 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 46 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.4s IncrementalHoareTripleChecker+Time [2023-04-02 15:14:14,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 199 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 360 Invalid, 26 Unknown, 0 Unchecked, 56.4s Time] [2023-04-02 15:14:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-04-02 15:14:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2023-04-02 15:14:14,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 15:14:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2023-04-02 15:14:14,066 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 32 [2023-04-02 15:14:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:14:14,066 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2023-04-02 15:14:14,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 15:14:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2023-04-02 15:14:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-02 15:14:14,066 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:14:14,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:14:14,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 15:14:14,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:14:14,270 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:14:14,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:14:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1332557612, now seen corresponding path program 2 times [2023-04-02 15:14:14,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:14:14,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63334671] [2023-04-02 15:14:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:14:14,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:14:14,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 15:14:14,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797076043] [2023-04-02 15:14:14,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 15:14:14,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:14:14,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:14:14,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 15:14:14,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 15:14:14,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 15:14:14,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 15:14:14,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 15:14:14,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:14:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 15:14:14,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:14:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 15:14:14,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:14:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63334671] [2023-04-02 15:14:14,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 15:14:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797076043] [2023-04-02 15:14:14,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797076043] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:14:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1906757146] [2023-04-02 15:14:14,504 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-04-02 15:14:14,504 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:14:14,504 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:14:14,504 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:14:14,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:14:14,521 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 22 for LOIs [2023-04-02 15:14:15,423 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2023-04-02 15:14:15,436 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2023-04-02 15:14:15,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 15:14:15,441 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 19 for LOIs [2023-04-02 15:14:15,443 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 15:14:22,788 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1181#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0) (= |#NULL.base| 0))' at error location [2023-04-02 15:14:22,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 15:14:22,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 15:14:22,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-04-02 15:14:22,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884783075] [2023-04-02 15:14:22,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 15:14:22,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 15:14:22,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:14:22,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 15:14:22,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=832, Unknown=2, NotChecked=0, Total=992 [2023-04-02 15:14:22,790 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-02 15:14:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:14:23,051 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2023-04-02 15:14:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 15:14:23,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 33 [2023-04-02 15:14:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:14:23,052 INFO L225 Difference]: With dead ends: 68 [2023-04-02 15:14:23,052 INFO L226 Difference]: Without dead ends: 63 [2023-04-02 15:14:23,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=196, Invalid=1134, Unknown=2, NotChecked=0, Total=1332 [2023-04-02 15:14:23,055 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 15:14:23,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 109 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 15:14:23,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-04-02 15:14:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2023-04-02 15:14:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 14 states have call successors, (14), 9 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 15:14:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2023-04-02 15:14:23,064 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 33 [2023-04-02 15:14:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:14:23,065 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2023-04-02 15:14:23,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-02 15:14:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2023-04-02 15:14:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-02 15:14:23,065 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:14:23,066 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:14:23,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 15:14:23,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:14:23,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:14:23,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:14:23,274 INFO L85 PathProgramCache]: Analyzing trace with hash -701098648, now seen corresponding path program 3 times [2023-04-02 15:14:23,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:14:23,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402046174] [2023-04-02 15:14:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:14:23,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:14:23,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 15:14:23,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982772784] [2023-04-02 15:14:23,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 15:14:23,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:14:23,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:14:23,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 15:14:23,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 15:14:23,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 15:14:23,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 15:14:23,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 15:14:23,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:14:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 15:14:23,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:14:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 15:14:23,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:14:23,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402046174] [2023-04-02 15:14:23,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 15:14:23,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982772784] [2023-04-02 15:14:23,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982772784] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:14:23,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1094977559] [2023-04-02 15:14:23,482 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-04-02 15:14:23,482 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:14:23,482 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:14:23,482 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:14:23,482 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:14:23,501 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 22 for LOIs [2023-04-02 15:14:24,373 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2023-04-02 15:14:24,379 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2023-04-02 15:14:24,380 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 15:14:24,384 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 19 for LOIs [2023-04-02 15:14:24,389 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 15:14:35,050 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1665#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0) (= |#NULL.base| 0))' at error location [2023-04-02 15:14:35,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 15:14:35,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 15:14:35,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-04-02 15:14:35,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65425935] [2023-04-02 15:14:35,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 15:14:35,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 15:14:35,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:14:35,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 15:14:35,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=835, Unknown=3, NotChecked=0, Total=992 [2023-04-02 15:14:35,052 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 15:14:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:14:35,214 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2023-04-02 15:14:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 15:14:35,214 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 41 [2023-04-02 15:14:35,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:14:35,215 INFO L225 Difference]: With dead ends: 68 [2023-04-02 15:14:35,215 INFO L226 Difference]: Without dead ends: 41 [2023-04-02 15:14:35,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=176, Invalid=1011, Unknown=3, NotChecked=0, Total=1190 [2023-04-02 15:14:35,216 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 30 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:14:35,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 75 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:14:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-04-02 15:14:35,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2023-04-02 15:14:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 15:14:35,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-04-02 15:14:35,221 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 41 [2023-04-02 15:14:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:14:35,221 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-04-02 15:14:35,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 15:14:35,222 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-04-02 15:14:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-02 15:14:35,222 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:14:35,222 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:14:35,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 15:14:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:14:35,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:14:35,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:14:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash -788547951, now seen corresponding path program 4 times [2023-04-02 15:14:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:14:35,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977735679] [2023-04-02 15:14:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:14:35,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:14:35,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 15:14:35,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875291950] [2023-04-02 15:14:35,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 15:14:35,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:14:35,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:14:35,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 15:14:35,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 15:14:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:14:35,745 WARN L260 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 125 conjunts are in the unsatisfiable core [2023-04-02 15:14:35,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:14:35,805 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 [2023-04-02 15:14:35,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:35,851 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 19 treesize of output 23 [2023-04-02 15:14:35,855 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 20 treesize of output 20 [2023-04-02 15:14:35,859 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 [2023-04-02 15:14:35,867 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 [2023-04-02 15:14:35,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 35 [2023-04-02 15:14:36,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:36,417 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 173 treesize of output 160 [2023-04-02 15:14:36,426 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 157 treesize of output 147 [2023-04-02 15:14:36,451 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2023-04-02 15:14:36,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 127 treesize of output 196 [2023-04-02 15:14:36,584 INFO L321 Elim1Store]: treesize reduction 45, result has 32.8 percent of original size [2023-04-02 15:14:36,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 39 [2023-04-02 15:14:37,770 INFO L321 Elim1Store]: treesize reduction 761, result has 19.6 percent of original size [2023-04-02 15:14:37,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 347 treesize of output 567 [2023-04-02 15:14:47,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,199 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:14:47,217 INFO L321 Elim1Store]: treesize reduction 114, result has 0.9 percent of original size [2023-04-02 15:14:47,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 270 treesize of output 86 [2023-04-02 15:14:47,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,296 INFO L321 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2023-04-02 15:14:47,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 47 [2023-04-02 15:14:47,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,402 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2023-04-02 15:14:47,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 245 treesize of output 73 [2023-04-02 15:14:47,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,470 INFO L321 Elim1Store]: treesize reduction 61, result has 4.7 percent of original size [2023-04-02 15:14:47,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 348 treesize of output 160 [2023-04-02 15:14:47,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,544 INFO L321 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2023-04-02 15:14:47,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 47 [2023-04-02 15:14:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,625 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2023-04-02 15:14:47,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 260 treesize of output 88 [2023-04-02 15:14:47,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,714 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2023-04-02 15:14:47,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 373 treesize of output 136 [2023-04-02 15:14:47,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,806 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:14:47,816 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-04-02 15:14:47,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 255 treesize of output 83 [2023-04-02 15:14:47,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:47,926 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2023-04-02 15:14:47,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 256 treesize of output 58 [2023-04-02 15:14:48,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:48,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:48,053 INFO L321 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2023-04-02 15:14:48,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 220 treesize of output 65 [2023-04-02 15:14:48,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:48,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:48,085 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:14:48,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 65 [2023-04-02 15:14:48,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:48,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:48,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:48,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:48,139 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:14:48,150 INFO L321 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2023-04-02 15:14:48,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 255 treesize of output 83 [2023-04-02 15:14:48,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:14:48,224 INFO L321 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2023-04-02 15:14:48,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 47 [2023-04-02 15:14:57,661 WARN L223 SmtUtils]: Spent 9.37s on a formula simplification. DAG size of input: 291 DAG size of output: 96 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-04-02 15:14:57,662 INFO L321 Elim1Store]: treesize reduction 2606, result has 11.1 percent of original size [2023-04-02 15:14:57,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 46 case distinctions, treesize of input 728 treesize of output 1403 [2023-04-02 15:15:02,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:02,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:02,822 INFO L321 Elim1Store]: treesize reduction 990, result has 9.8 percent of original size [2023-04-02 15:15:02,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 387 treesize of output 215 [2023-04-02 15:15:03,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:03,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:03,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:03,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:03,714 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:15:03,791 INFO L217 Elim1Store]: Index analysis took 244 ms [2023-04-02 15:15:05,125 INFO L321 Elim1Store]: treesize reduction 645, result has 13.4 percent of original size [2023-04-02 15:15:05,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 467 treesize of output 252 [2023-04-02 15:15:06,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:06,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:06,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:06,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:06,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:06,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:06,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:06,895 INFO L217 Elim1Store]: Index analysis took 108 ms [2023-04-02 15:15:07,831 INFO L321 Elim1Store]: treesize reduction 504, result has 12.5 percent of original size [2023-04-02 15:15:07,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 356 treesize of output 161 [2023-04-02 15:15:08,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:08,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:08,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:08,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:08,475 INFO L321 Elim1Store]: treesize reduction 585, result has 12.0 percent of original size [2023-04-02 15:15:08,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 356 treesize of output 169 [2023-04-02 15:15:09,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:09,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:09,748 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:15:09,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:09,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:09,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:09,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:09,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:09,775 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 15:15:09,949 INFO L321 Elim1Store]: treesize reduction 526, result has 14.2 percent of original size [2023-04-02 15:15:09,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 374 treesize of output 178 [2023-04-02 15:15:10,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:10,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 15:15:10,881 INFO L321 Elim1Store]: treesize reduction 702, result has 15.2 percent of original size [2023-04-02 15:15:10,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 462 treesize of output 269