/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:52:16,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:52:16,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:52:16,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:52:16,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:52:16,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:52:16,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:52:16,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:52:16,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:52:16,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:52:16,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:52:16,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:52:16,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:52:16,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:52:16,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:52:16,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:52:16,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:52:16,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:52:16,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:52:16,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:52:16,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:52:16,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:52:16,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:52:16,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:52:16,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 13:52:16,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 13:52:16,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 13:52:16,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 13:52:16,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 13:52:16,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 13:52:16,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 13:52:16,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 13:52:16,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 13:52:16,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 13:52:16,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 13:52:16,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 13:52:16,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 13:52:16,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 13:52:16,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:52:16,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:52:16,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:52:16,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:52:16,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:52:16,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:52:16,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:52:16,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:52:16,847 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:52:16,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:52:16,848 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:52:16,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:52:16,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:52:16,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:52:16,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:52:16,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:52:16,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:52:16,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:52:16,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:52:16,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:52:16,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:52:16,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:52:16,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:52:16,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:52:16,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:16,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:52:16,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:52:16,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:52:16,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:52:16,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:52:16,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:52:16,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:52:16,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:52:17,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:52:17,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:52:17,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:52:17,316 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:52:17,317 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:52:17,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3f.c [2021-02-23 13:52:17,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cb53b84/41eea6f9ed074fa6b7a0bc4bc3d0b16c/FLAG3fa0aec8f [2021-02-23 13:52:17,967 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:52:17,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3f.c [2021-02-23 13:52:17,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cb53b84/41eea6f9ed074fa6b7a0bc4bc3d0b16c/FLAG3fa0aec8f [2021-02-23 13:52:18,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cb53b84/41eea6f9ed074fa6b7a0bc4bc3d0b16c [2021-02-23 13:52:18,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:52:18,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:52:18,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:18,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:52:18,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:52:18,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:18" (1/1) ... [2021-02-23 13:52:18,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7883df51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18, skipping insertion in model container [2021-02-23 13:52:18,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:18" (1/1) ... [2021-02-23 13:52:18,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:52:18,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:52:18,631 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3f.c[587,600] [2021-02-23 13:52:18,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:18,691 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:52:18,713 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3f.c[587,600] [2021-02-23 13:52:18,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:18,767 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:52:18,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18 WrapperNode [2021-02-23 13:52:18,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:18,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:52:18,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:52:18,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:52:18,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18" (1/1) ... [2021-02-23 13:52:18,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18" (1/1) ... [2021-02-23 13:52:18,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18" (1/1) ... [2021-02-23 13:52:18,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18" (1/1) ... [2021-02-23 13:52:18,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18" (1/1) ... [2021-02-23 13:52:18,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18" (1/1) ... [2021-02-23 13:52:18,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18" (1/1) ... [2021-02-23 13:52:18,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:52:18,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:52:18,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:52:18,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:52:18,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:18,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:52:18,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:52:18,964 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:52:18,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:52:18,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:52:18,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:52:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:52:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:52:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:52:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:52:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:52:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:52:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:52:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:52:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:52:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:52:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:52:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:52:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:52:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:52:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:52:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:52:19,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:52:19,323 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 13:52:19,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:19 BoogieIcfgContainer [2021-02-23 13:52:19,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:52:19,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:52:19,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:52:19,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:52:19,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:52:18" (1/3) ... [2021-02-23 13:52:19,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e57928c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:19, skipping insertion in model container [2021-02-23 13:52:19,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:18" (2/3) ... [2021-02-23 13:52:19,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e57928c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:19, skipping insertion in model container [2021-02-23 13:52:19,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:19" (3/3) ... [2021-02-23 13:52:19,337 INFO L111 eAbstractionObserver]: Analyzing ICFG ss3f.c [2021-02-23 13:52:19,346 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:52:19,352 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:52:19,377 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:52:19,409 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:52:19,410 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:52:19,410 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:52:19,410 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:52:19,410 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:52:19,410 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:52:19,411 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:52:19,411 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:52:19,431 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-23 13:52:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:52:19,439 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:19,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:52:19,440 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:19,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:19,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1142530869, now seen corresponding path program 1 times [2021-02-23 13:52:19,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:19,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890066951] [2021-02-23 13:52:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:19,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:19,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:19,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:19,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:19,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:19,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:19,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:52:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:19,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:19,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:19,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:19,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:19,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890066951] [2021-02-23 13:52:19,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:19,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:52:19,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404114525] [2021-02-23 13:52:19,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:52:19,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:20,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:52:20,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:52:20,021 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2021-02-23 13:52:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:20,195 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2021-02-23 13:52:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:52:20,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-02-23 13:52:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:20,206 INFO L225 Difference]: With dead ends: 70 [2021-02-23 13:52:20,206 INFO L226 Difference]: Without dead ends: 33 [2021-02-23 13:52:20,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:52:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-23 13:52:20,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-23 13:52:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-23 13:52:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-02-23 13:52:20,259 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 27 [2021-02-23 13:52:20,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:20,259 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-02-23 13:52:20,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:52:20,259 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-02-23 13:52:20,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:52:20,261 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:20,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:52:20,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:52:20,262 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:20,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:20,263 INFO L82 PathProgramCache]: Analyzing trace with hash 986516815, now seen corresponding path program 1 times [2021-02-23 13:52:20,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:20,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707387583] [2021-02-23 13:52:20,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:20,297 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-23 13:52:20,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676360939] [2021-02-23 13:52:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:52:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:20,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-02-23 13:52:20,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-23 13:52:20,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:20,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:20,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:20,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:20,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:20,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:20,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:20,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:20,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:20,513 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-02-23 13:52:20,514 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size 10 [2021-02-23 13:52:20,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:20,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:20,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:52:20,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:52:20,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:20,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:20,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707387583] [2021-02-23 13:52:20,623 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-02-23 13:52:20,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676360939] [2021-02-23 13:52:20,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:20,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:52:20,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680330753] [2021-02-23 13:52:20,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:52:20,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:20,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:52:20,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:52:20,628 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2021-02-23 13:52:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:20,717 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2021-02-23 13:52:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 13:52:20,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-02-23 13:52:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:20,719 INFO L225 Difference]: With dead ends: 61 [2021-02-23 13:52:20,720 INFO L226 Difference]: Without dead ends: 43 [2021-02-23 13:52:20,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:52:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-02-23 13:52:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-02-23 13:52:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-23 13:52:20,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-02-23 13:52:20,734 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2021-02-23 13:52:20,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:20,734 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-02-23 13:52:20,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:52:20,735 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-02-23 13:52:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-23 13:52:20,736 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:20,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:52:20,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-23 13:52:20,950 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:20,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:20,952 INFO L82 PathProgramCache]: Analyzing trace with hash -382625319, now seen corresponding path program 1 times [2021-02-23 13:52:20,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:20,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163202792] [2021-02-23 13:52:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:20,989 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-23 13:52:20,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363396220] [2021-02-23 13:52:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:52:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:21,082 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:21,116 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:21,203 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:52:21,203 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:52:21,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:52:21,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:52:21 BoogieIcfgContainer [2021-02-23 13:52:21,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:52:21,472 INFO L168 Benchmark]: Toolchain (without parser) took 3132.50 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 131.2 MB in the beginning and 146.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:21,472 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:52:21,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.62 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 119.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:21,473 INFO L168 Benchmark]: Boogie Preprocessor took 93.35 ms. Allocated memory is still 155.2 MB. Free memory was 119.8 MB in the beginning and 118.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:21,474 INFO L168 Benchmark]: RCFGBuilder took 461.37 ms. Allocated memory is still 155.2 MB. Free memory was 118.0 MB in the beginning and 136.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:21,475 INFO L168 Benchmark]: TraceAbstraction took 2143.88 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 135.5 MB in the beginning and 146.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:21,477 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 411.62 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 119.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.35 ms. Allocated memory is still 155.2 MB. Free memory was 119.8 MB in the beginning and 118.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 461.37 ms. Allocated memory is still 155.2 MB. Free memory was 118.0 MB in the beginning and 136.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2143.88 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 135.5 MB in the beginning and 146.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=16, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={3:0}] [L32] COND TRUE i