/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-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:43:47,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:43:47,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:43:47,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:43:47,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:43:47,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:43:47,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:43:47,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:43:47,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:43:47,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:43:47,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:43:47,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:43:47,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:43:47,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:43:47,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:43:47,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:43:47,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:43:47,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:43:47,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:43:47,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:43:47,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:43:47,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:43:47,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:43:47,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:43:47,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:43:47,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:43:47,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:43:47,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:43:47,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:43:47,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:43:47,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:43:47,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:43:47,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:43:47,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:43:47,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:43:47,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:43:47,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:43:47,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:43:47,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:43:47,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:43:47,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:43:47,960 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 [2020-11-06 22:43:47,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:43:47,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:43:47,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:43:47,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:43:47,997 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:43:47,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:43:47,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:43:47,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:43:47,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:43:47,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:43:47,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:43:47,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:43:48,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:43:48,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:43:48,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:43:48,000 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:43:48,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:43:48,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:43:48,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:43:48,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:43:48,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:43:48,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:43:48,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:43:48,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:43:48,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:43:48,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:43:48,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:43:48,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:43:48,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:43:48,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:43:48,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:43:48,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:43:48,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:43:48,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:43:48,424 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:43:48,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-11-06 22:43:48,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e392f29d/acf1a1335bd442a3a0c1f4bd6dfde02d/FLAG9a4e5e047 [2020-11-06 22:43:49,214 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:43:49,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-11-06 22:43:49,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e392f29d/acf1a1335bd442a3a0c1f4bd6dfde02d/FLAG9a4e5e047 [2020-11-06 22:43:49,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e392f29d/acf1a1335bd442a3a0c1f4bd6dfde02d [2020-11-06 22:43:49,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:43:49,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:43:49,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:43:49,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:43:49,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:43:49,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:49" (1/1) ... [2020-11-06 22:43:49,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44801755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49, skipping insertion in model container [2020-11-06 22:43:49,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:49" (1/1) ... [2020-11-06 22:43:49,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:43:49,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:43:49,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:43:49,787 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:43:49,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:43:49,833 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:43:49,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49 WrapperNode [2020-11-06 22:43:49,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:43:49,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:43:49,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:43:49,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:43:49,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49" (1/1) ... [2020-11-06 22:43:49,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49" (1/1) ... [2020-11-06 22:43:49,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49" (1/1) ... [2020-11-06 22:43:49,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49" (1/1) ... [2020-11-06 22:43:49,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49" (1/1) ... [2020-11-06 22:43:49,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49" (1/1) ... [2020-11-06 22:43:49,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49" (1/1) ... [2020-11-06 22:43:49,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:43:49,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:43:49,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:43:49,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:43:49,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49" (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 [2020-11-06 22:43:49,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:43:49,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:43:49,970 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:43:49,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:43:49,970 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-11-06 22:43:49,971 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-11-06 22:43:49,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:43:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:43:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:43:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:43:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:43:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:43:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:43:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:43:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:43:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-11-06 22:43:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:43:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-11-06 22:43:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:43:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:43:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:43:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:43:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:43:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:43:50,664 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:43:50,664 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-06 22:43:50,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:50 BoogieIcfgContainer [2020-11-06 22:43:50,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:43:50,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:43:50,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:43:50,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:43:50,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:43:49" (1/3) ... [2020-11-06 22:43:50,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c910f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:50, skipping insertion in model container [2020-11-06 22:43:50,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:49" (2/3) ... [2020-11-06 22:43:50,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c910f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:50, skipping insertion in model container [2020-11-06 22:43:50,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:50" (3/3) ... [2020-11-06 22:43:50,678 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-11-06 22:43:50,696 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:43:50,700 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:43:50,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:43:50,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:43:50,754 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:43:50,754 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:43:50,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:43:50,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:43:50,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:43:50,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:43:50,755 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:43:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-11-06 22:43:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 22:43:50,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:50,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:43:50,787 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:50,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:50,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1391341864, now seen corresponding path program 1 times [2020-11-06 22:43:50,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:50,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852163650] [2020-11-06 22:43:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:51,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852163650] [2020-11-06 22:43:51,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:51,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:43:51,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073290135] [2020-11-06 22:43:51,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:43:51,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:51,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:43:51,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:43:51,094 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-11-06 22:43:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:51,409 INFO L93 Difference]: Finished difference Result 157 states and 238 transitions. [2020-11-06 22:43:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:43:51,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-06 22:43:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:51,422 INFO L225 Difference]: With dead ends: 157 [2020-11-06 22:43:51,422 INFO L226 Difference]: Without dead ends: 91 [2020-11-06 22:43:51,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:43:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-06 22:43:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 59. [2020-11-06 22:43:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-06 22:43:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2020-11-06 22:43:51,480 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 16 [2020-11-06 22:43:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:51,480 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2020-11-06 22:43:51,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:43:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2020-11-06 22:43:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 22:43:51,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:51,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:43:51,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:43:51,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:51,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:51,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1569746374, now seen corresponding path program 1 times [2020-11-06 22:43:51,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:51,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545799611] [2020-11-06 22:43:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:51,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:51,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545799611] [2020-11-06 22:43:51,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466483412] [2020-11-06 22:43:51,596 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 [2020-11-06 22:43:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:51,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-06 22:43:51,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:43:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:51,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:43:51,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-11-06 22:43:51,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956784203] [2020-11-06 22:43:51,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:43:51,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:51,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:43:51,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:43:51,726 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 6 states. [2020-11-06 22:43:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:51,997 INFO L93 Difference]: Finished difference Result 174 states and 226 transitions. [2020-11-06 22:43:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:43:51,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-06 22:43:51,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:52,000 INFO L225 Difference]: With dead ends: 174 [2020-11-06 22:43:52,001 INFO L226 Difference]: Without dead ends: 124 [2020-11-06 22:43:52,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:43:52,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-06 22:43:52,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 61. [2020-11-06 22:43:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-06 22:43:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-11-06 22:43:52,016 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 18 [2020-11-06 22:43:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:52,017 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-11-06 22:43:52,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:43:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-11-06 22:43:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 22:43:52,018 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:52,018 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:43:52,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:43:52,234 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:52,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1217788644, now seen corresponding path program 2 times [2020-11-06 22:43:52,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:52,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685562883] [2020-11-06 22:43:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:43:52,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685562883] [2020-11-06 22:43:52,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:52,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:43:52,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652639458] [2020-11-06 22:43:52,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:43:52,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:52,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:43:52,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:43:52,338 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 5 states. [2020-11-06 22:43:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:52,479 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2020-11-06 22:43:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:43:52,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-06 22:43:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:52,481 INFO L225 Difference]: With dead ends: 116 [2020-11-06 22:43:52,481 INFO L226 Difference]: Without dead ends: 65 [2020-11-06 22:43:52,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:43:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-06 22:43:52,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-11-06 22:43:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-06 22:43:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2020-11-06 22:43:52,491 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 20 [2020-11-06 22:43:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:52,492 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2020-11-06 22:43:52,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:43:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2020-11-06 22:43:52,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-06 22:43:52,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:52,494 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:43:52,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:43:52,494 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:52,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:52,495 INFO L82 PathProgramCache]: Analyzing trace with hash -2022953633, now seen corresponding path program 1 times [2020-11-06 22:43:52,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:52,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372101378] [2020-11-06 22:43:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-06 22:43:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-06 22:43:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:43:52,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372101378] [2020-11-06 22:43:52,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:52,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:43:52,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122237834] [2020-11-06 22:43:52,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:43:52,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:52,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:43:52,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:43:52,581 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 5 states. [2020-11-06 22:43:52,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:52,760 INFO L93 Difference]: Finished difference Result 129 states and 158 transitions. [2020-11-06 22:43:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:43:52,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-06 22:43:52,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:52,762 INFO L225 Difference]: With dead ends: 129 [2020-11-06 22:43:52,763 INFO L226 Difference]: Without dead ends: 82 [2020-11-06 22:43:52,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:43:52,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-06 22:43:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 64. [2020-11-06 22:43:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-06 22:43:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2020-11-06 22:43:52,773 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 39 [2020-11-06 22:43:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:52,774 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2020-11-06 22:43:52,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:43:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2020-11-06 22:43:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-06 22:43:52,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:52,776 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:43:52,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:43:52,776 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:52,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:52,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1107993347, now seen corresponding path program 1 times [2020-11-06 22:43:52,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:52,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543622849] [2020-11-06 22:43:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:43:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-06 22:43:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:43:52,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543622849] [2020-11-06 22:43:52,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042295888] [2020-11-06 22:43:52,897 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 [2020-11-06 22:43:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:52,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:43:53,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:43:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:43:53,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:43:53,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-11-06 22:43:53,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469798991] [2020-11-06 22:43:53,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:43:53,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:53,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:43:53,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:43:53,056 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 9 states. [2020-11-06 22:43:53,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:53,781 INFO L93 Difference]: Finished difference Result 287 states and 384 transitions. [2020-11-06 22:43:53,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-06 22:43:53,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-11-06 22:43:53,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:53,785 INFO L225 Difference]: With dead ends: 287 [2020-11-06 22:43:53,785 INFO L226 Difference]: Without dead ends: 234 [2020-11-06 22:43:53,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-11-06 22:43:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-06 22:43:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 83. [2020-11-06 22:43:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-06 22:43:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2020-11-06 22:43:53,818 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 41 [2020-11-06 22:43:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:53,819 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2020-11-06 22:43:53,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:43:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2020-11-06 22:43:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-06 22:43:53,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:53,822 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:43:54,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:43:54,030 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:54,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2014727289, now seen corresponding path program 2 times [2020-11-06 22:43:54,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:54,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137754401] [2020-11-06 22:43:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:54,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-06 22:43:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:54,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-06 22:43:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-06 22:43:54,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137754401] [2020-11-06 22:43:54,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:54,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:43:54,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222356793] [2020-11-06 22:43:54,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:43:54,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:54,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:43:54,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:43:54,155 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand 7 states. [2020-11-06 22:43:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:54,456 INFO L93 Difference]: Finished difference Result 148 states and 185 transitions. [2020-11-06 22:43:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:43:54,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-11-06 22:43:54,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:54,459 INFO L225 Difference]: With dead ends: 148 [2020-11-06 22:43:54,459 INFO L226 Difference]: Without dead ends: 89 [2020-11-06 22:43:54,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:43:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-06 22:43:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-11-06 22:43:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-06 22:43:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2020-11-06 22:43:54,488 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 45 [2020-11-06 22:43:54,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:54,489 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2020-11-06 22:43:54,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:43:54,489 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2020-11-06 22:43:54,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-06 22:43:54,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:54,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:43:54,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 22:43:54,491 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:54,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:54,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1216039938, now seen corresponding path program 1 times [2020-11-06 22:43:54,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:54,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810261531] [2020-11-06 22:43:54,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:54,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:54,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-06 22:43:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:54,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-06 22:43:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-06 22:43:54,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810261531] [2020-11-06 22:43:54,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:54,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:43:54,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519173879] [2020-11-06 22:43:54,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:43:54,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:54,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:43:54,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:43:54,641 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand 6 states. [2020-11-06 22:43:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:54,807 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2020-11-06 22:43:54,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:43:54,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-11-06 22:43:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:54,808 INFO L225 Difference]: With dead ends: 100 [2020-11-06 22:43:54,808 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:43:54,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:43:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:43:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:43:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:43:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:43:54,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-11-06 22:43:54,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:54,810 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:43:54,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:43:54,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:43:54,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:43:54,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 22:43:54,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:43:55,033 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-11-06 22:43:55,033 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-06 22:43:55,034 INFO L266 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-11-06 22:43:55,034 INFO L266 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-06 22:43:55,034 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-06 22:43:55,034 INFO L269 CegarLoopResult]: At program point elem_existsENTRY(lines 20 26) the Hoare annotation is: true [2020-11-06 22:43:55,034 INFO L266 CegarLoopResult]: For program point elem_existsEXIT(lines 20 26) no Hoare annotation was computed. [2020-11-06 22:43:55,034 INFO L266 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-06 22:43:55,034 INFO L266 CegarLoopResult]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2020-11-06 22:43:55,034 INFO L262 CegarLoopResult]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (<= 0 elem_exists_~i~0) (= elem_exists_~size |elem_exists_#in~size|)) [2020-11-06 22:43:55,035 INFO L266 CegarLoopResult]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2020-11-06 22:43:55,035 INFO L266 CegarLoopResult]: For program point elem_existsFINAL(lines 20 26) no Hoare annotation was computed. [2020-11-06 22:43:55,035 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:43:55,035 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |old(#t~string1.offset)| |#t~string1.offset|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-06 22:43:55,035 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:43:55,035 INFO L269 CegarLoopResult]: At program point insertENTRY(lines 16 19) the Hoare annotation is: true [2020-11-06 22:43:55,035 INFO L266 CegarLoopResult]: For program point insertFINAL(lines 16 19) no Hoare annotation was computed. [2020-11-06 22:43:55,036 INFO L266 CegarLoopResult]: For program point insertEXIT(lines 16 19) no Hoare annotation was computed. [2020-11-06 22:43:55,036 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:43:55,036 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:43:55,036 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:43:55,036 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:43:55,036 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 27 67) no Hoare annotation was computed. [2020-11-06 22:43:55,036 INFO L262 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-11-06 22:43:55,036 INFO L266 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-11-06 22:43:55,036 INFO L266 CegarLoopResult]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2020-11-06 22:43:55,037 INFO L266 CegarLoopResult]: For program point L52-4(lines 52 54) no Hoare annotation was computed. [2020-11-06 22:43:55,037 INFO L266 CegarLoopResult]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2020-11-06 22:43:55,037 INFO L262 CegarLoopResult]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-11-06 22:43:55,037 INFO L266 CegarLoopResult]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2020-11-06 22:43:55,037 INFO L262 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: false [2020-11-06 22:43:55,037 INFO L266 CegarLoopResult]: For program point L53-1(line 53) no Hoare annotation was computed. [2020-11-06 22:43:55,037 INFO L266 CegarLoopResult]: For program point L62-2(lines 62 64) no Hoare annotation was computed. [2020-11-06 22:43:55,037 INFO L262 CegarLoopResult]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2020-11-06 22:43:55,038 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 27 67) no Hoare annotation was computed. [2020-11-06 22:43:55,038 INFO L262 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: false [2020-11-06 22:43:55,038 INFO L266 CegarLoopResult]: For program point L63-1(line 63) no Hoare annotation was computed. [2020-11-06 22:43:55,038 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 27 67) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-11-06 22:43:55,038 INFO L266 CegarLoopResult]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2020-11-06 22:43:55,038 INFO L262 CegarLoopResult]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-11-06 22:43:55,038 INFO L266 CegarLoopResult]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2020-11-06 22:43:55,039 INFO L262 CegarLoopResult]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-11-06 22:43:55,039 INFO L266 CegarLoopResult]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2020-11-06 22:43:55,039 INFO L266 CegarLoopResult]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-11-06 22:43:55,039 INFO L262 CegarLoopResult]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-11-06 22:43:55,039 INFO L266 CegarLoopResult]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-11-06 22:43:55,039 INFO L266 CegarLoopResult]: For program point L56-2(lines 56 58) no Hoare annotation was computed. [2020-11-06 22:43:55,039 INFO L262 CegarLoopResult]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2020-11-06 22:43:55,039 INFO L266 CegarLoopResult]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2020-11-06 22:43:55,039 INFO L262 CegarLoopResult]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2020-11-06 22:43:55,040 INFO L262 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: false [2020-11-06 22:43:55,040 INFO L266 CegarLoopResult]: For program point L57-1(line 57) no Hoare annotation was computed. [2020-11-06 22:43:55,040 INFO L262 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: false [2020-11-06 22:43:55,040 INFO L266 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-11-06 22:43:55,040 INFO L266 CegarLoopResult]: For program point L33-2(lines 33 36) no Hoare annotation was computed. [2020-11-06 22:43:55,040 INFO L262 CegarLoopResult]: At program point L33-3(lines 33 36) the Hoare annotation is: (= main_~n~0 0) [2020-11-06 22:43:55,040 INFO L266 CegarLoopResult]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2020-11-06 22:43:55,040 INFO L266 CegarLoopResult]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2020-11-06 22:43:55,041 INFO L262 CegarLoopResult]: At program point L51-3(lines 51 60) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2020-11-06 22:43:55,041 INFO L266 CegarLoopResult]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2020-11-06 22:43:55,041 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 13) the Hoare annotation is: true [2020-11-06 22:43:55,041 INFO L266 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-06 22:43:55,041 INFO L269 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: true [2020-11-06 22:43:55,041 INFO L266 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-06 22:43:55,041 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2020-11-06 22:43:55,041 INFO L266 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-11-06 22:43:55,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:43:55 BoogieIcfgContainer [2020-11-06 22:43:55,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:43:55,062 INFO L168 Benchmark]: Toolchain (without parser) took 5507.97 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.4 MB in the beginning and 127.0 MB in the end (delta: -528.0 kB). Peak memory consumption was 30.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:43:55,063 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 101.4 MB in the end (delta: 73.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:43:55,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.20 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:43:55,065 INFO L168 Benchmark]: Boogie Preprocessor took 49.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:43:55,065 INFO L168 Benchmark]: RCFGBuilder took 781.14 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 123.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:43:55,066 INFO L168 Benchmark]: TraceAbstraction took 4390.07 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 123.4 MB in the beginning and 127.0 MB in the end (delta: -3.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:43:55,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 101.4 MB in the end (delta: 73.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.20 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 781.14 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 123.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4390.07 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 123.4 MB in the beginning and 127.0 MB in the end (delta: -3.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: n == 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 <= i && size == \old(size) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 412 SDtfs, 570 SDslu, 582 SDs, 0 SdLazy, 920 SolverSat, 299 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 268 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 96 PreInvPairs, 111 NumberOfFragments, 101 HoareAnnotationTreeSize, 96 FomulaSimplifications, 340 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 283 NumberOfCodeBlocks, 283 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 19328 SizeOfPredicates, 2 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 39/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...