/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:27:09,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:27:09,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:27:09,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:27:09,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:27:09,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:27:09,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:27:09,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:27:09,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:27:09,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:27:09,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:27:09,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:27:09,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:27:09,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:27:09,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:27:09,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:27:09,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:27:09,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:27:09,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:27:09,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:27:09,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:27:09,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:27:09,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:27:09,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:27:09,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 01:27:09,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 01:27:09,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 01:27:09,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 01:27:09,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 01:27:09,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 01:27:09,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 01:27:09,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 01:27:09,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 01:27:09,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 01:27:09,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 01:27:09,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 01:27:09,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 01:27:09,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 01:27:09,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:27:09,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:27:09,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:27:09,971 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 [2020-07-20 01:27:09,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:27:09,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:27:09,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:27:09,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:27:09,994 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:27:09,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:27:09,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:27:09,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:27:09,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:27:09,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:27:09,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:27:09,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:27:09,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:27:09,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:27:09,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:27:09,998 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:27:09,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:27:09,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:27:09,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:27:09,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:27:09,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:27:09,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:27:09,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:27:09,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:27:10,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:27:10,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:27:10,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:27:10,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:27:10,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:27:10,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:27:10,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:27:10,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:27:10,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:27:10,310 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:27:10,311 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:27:10,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-07-20 01:27:10,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ccc4a5f0/4b0cba29d8e945f8a0366967b5bb8dbe/FLAGccb6c531b [2020-07-20 01:27:10,902 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:27:10,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-07-20 01:27:10,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ccc4a5f0/4b0cba29d8e945f8a0366967b5bb8dbe/FLAGccb6c531b [2020-07-20 01:27:11,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ccc4a5f0/4b0cba29d8e945f8a0366967b5bb8dbe [2020-07-20 01:27:11,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:27:11,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:27:11,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:27:11,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:27:11,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:27:11,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:27:11" (1/1) ... [2020-07-20 01:27:11,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a2ed8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11, skipping insertion in model container [2020-07-20 01:27:11,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:27:11" (1/1) ... [2020-07-20 01:27:11,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:27:11,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:27:11,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:27:11,516 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:27:11,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:27:11,558 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:27:11,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11 WrapperNode [2020-07-20 01:27:11,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:27:11,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:27:11,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:27:11,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:27:11,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11" (1/1) ... [2020-07-20 01:27:11,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11" (1/1) ... [2020-07-20 01:27:11,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11" (1/1) ... [2020-07-20 01:27:11,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11" (1/1) ... [2020-07-20 01:27:11,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11" (1/1) ... [2020-07-20 01:27:11,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11" (1/1) ... [2020-07-20 01:27:11,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11" (1/1) ... [2020-07-20 01:27:11,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:27:11,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:27:11,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:27:11,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:27:11,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11" (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 [2020-07-20 01:27:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:27:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:27:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:27:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:27:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-20 01:27:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:27:11,766 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-20 01:27:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 01:27:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 01:27:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:27:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:27:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:27:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:27:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:27:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 01:27:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:27:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:27:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 01:27:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-20 01:27:11,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:27:11,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:27:11,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:27:11,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:27:12,123 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:27:12,123 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 01:27:12,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:27:12 BoogieIcfgContainer [2020-07-20 01:27:12,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:27:12,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:27:12,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:27:12,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:27:12,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:27:11" (1/3) ... [2020-07-20 01:27:12,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cf950a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:27:12, skipping insertion in model container [2020-07-20 01:27:12,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:11" (2/3) ... [2020-07-20 01:27:12,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cf950a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:27:12, skipping insertion in model container [2020-07-20 01:27:12,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:27:12" (3/3) ... [2020-07-20 01:27:12,135 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-07-20 01:27:12,145 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:27:12,152 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:27:12,166 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:27:12,187 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:27:12,187 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:27:12,188 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:27:12,188 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:27:12,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:27:12,188 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:27:12,188 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:27:12,188 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:27:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-20 01:27:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 01:27:12,214 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:12,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:12,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:12,223 INFO L82 PathProgramCache]: Analyzing trace with hash -640327596, now seen corresponding path program 1 times [2020-07-20 01:27:12,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:12,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24245005] [2020-07-20 01:27:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@509f4a52 [2020-07-20 01:27:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:12,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 01:27:12,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24245005] [2020-07-20 01:27:12,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:27:12,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:27:12,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956195812] [2020-07-20 01:27:12,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:27:12,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:12,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:27:12,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:27:12,466 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-07-20 01:27:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:12,671 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2020-07-20 01:27:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:27:12,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-20 01:27:12,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:12,684 INFO L225 Difference]: With dead ends: 83 [2020-07-20 01:27:12,684 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 01:27:12,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:27:12,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 01:27:12,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 01:27:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 01:27:12,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-07-20 01:27:12,738 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 30 [2020-07-20 01:27:12,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:12,738 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-07-20 01:27:12,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:27:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-07-20 01:27:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 01:27:12,741 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:12,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:12,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:27:12,742 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:12,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:12,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1442541232, now seen corresponding path program 1 times [2020-07-20 01:27:12,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:12,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403505518] [2020-07-20 01:27:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@509f4a52 [2020-07-20 01:27:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 01:27:12,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403505518] [2020-07-20 01:27:12,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:27:12,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 01:27:12,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147228460] [2020-07-20 01:27:12,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:27:12,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:12,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:27:12,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:27:12,992 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 8 states. [2020-07-20 01:27:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:13,442 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-07-20 01:27:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 01:27:13,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-07-20 01:27:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:13,447 INFO L225 Difference]: With dead ends: 64 [2020-07-20 01:27:13,447 INFO L226 Difference]: Without dead ends: 62 [2020-07-20 01:27:13,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-07-20 01:27:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-20 01:27:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-07-20 01:27:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 01:27:13,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-07-20 01:27:13,467 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 30 [2020-07-20 01:27:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:13,467 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-07-20 01:27:13,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:27:13,467 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-07-20 01:27:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 01:27:13,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:13,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:13,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:27:13,469 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:13,470 INFO L82 PathProgramCache]: Analyzing trace with hash 389656800, now seen corresponding path program 1 times [2020-07-20 01:27:13,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:13,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8326852] [2020-07-20 01:27:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@509f4a52 [2020-07-20 01:27:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 01:27:13,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8326852] [2020-07-20 01:27:13,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:27:13,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 01:27:13,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207624764] [2020-07-20 01:27:13,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 01:27:13,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:13,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 01:27:13,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:27:13,703 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 10 states. [2020-07-20 01:27:14,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:14,104 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-07-20 01:27:14,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 01:27:14,106 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-07-20 01:27:14,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:14,110 INFO L225 Difference]: With dead ends: 63 [2020-07-20 01:27:14,110 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 01:27:14,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-07-20 01:27:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 01:27:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-20 01:27:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 01:27:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-07-20 01:27:14,140 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 33 [2020-07-20 01:27:14,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:14,141 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-07-20 01:27:14,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 01:27:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-07-20 01:27:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 01:27:14,145 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:14,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:14,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 01:27:14,146 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:14,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:14,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1379492317, now seen corresponding path program 1 times [2020-07-20 01:27:14,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:14,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479138305] [2020-07-20 01:27:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@509f4a52 [2020-07-20 01:27:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 01:27:14,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479138305] [2020-07-20 01:27:14,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250485781] [2020-07-20 01:27:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@486236aa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:14,497 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@486236aa issued 4 check-sat command(s) [2020-07-20 01:27:14,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:14,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-20 01:27:14,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:14,591 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:27:14,592 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:27:14,597 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:27:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 01:27:14,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:27:14,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 14 [2020-07-20 01:27:14,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728500358] [2020-07-20 01:27:14,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:27:14,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:14,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:27:14,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-07-20 01:27:14,637 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 8 states. [2020-07-20 01:27:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:14,848 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-07-20 01:27:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 01:27:14,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-07-20 01:27:14,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:14,851 INFO L225 Difference]: With dead ends: 66 [2020-07-20 01:27:14,851 INFO L226 Difference]: Without dead ends: 64 [2020-07-20 01:27:14,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-07-20 01:27:14,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-20 01:27:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2020-07-20 01:27:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-20 01:27:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-07-20 01:27:14,870 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 45 [2020-07-20 01:27:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:14,871 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-07-20 01:27:14,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:27:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-07-20 01:27:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 01:27:14,873 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:14,874 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-20 01:27:15,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:15,088 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:15,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:15,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1445821128, now seen corresponding path program 1 times [2020-07-20 01:27:15,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:15,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888917467] [2020-07-20 01:27:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@509f4a52 [2020-07-20 01:27:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 01:27:15,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888917467] [2020-07-20 01:27:15,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208305633] [2020-07-20 01:27:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@122129d4 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 [2020-07-20 01:27:15,325 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@122129d4 issued 2 check-sat command(s) [2020-07-20 01:27:15,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:15,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 01:27:15,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:15,402 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2020-07-20 01:27:15,405 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:15,409 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:15,410 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:15,412 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2020-07-20 01:27:17,466 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) is different from true [2020-07-20 01:27:19,496 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_2 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_2))) is different from true [2020-07-20 01:27:19,535 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2020-07-20 01:27:19,536 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:19,546 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:19,548 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-20 01:27:19,549 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:21 [2020-07-20 01:27:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 01:27:19,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:27:19,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 13 [2020-07-20 01:27:19,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92711148] [2020-07-20 01:27:19,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 01:27:19,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:19,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 01:27:19,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=92, Unknown=2, NotChecked=38, Total=156 [2020-07-20 01:27:19,606 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-07-20 01:27:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:19,734 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-07-20 01:27:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 01:27:19,736 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-07-20 01:27:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:19,737 INFO L225 Difference]: With dead ends: 74 [2020-07-20 01:27:19,738 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 01:27:19,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=36, Invalid=152, Unknown=2, NotChecked=50, Total=240 [2020-07-20 01:27:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 01:27:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-07-20 01:27:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-20 01:27:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-07-20 01:27:19,747 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 48 [2020-07-20 01:27:19,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:19,748 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-07-20 01:27:19,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 01:27:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-07-20 01:27:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 01:27:19,749 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:19,749 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-20 01:27:19,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:19,952 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:19,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:19,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2146885706, now seen corresponding path program 1 times [2020-07-20 01:27:19,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:19,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911746144] [2020-07-20 01:27:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@509f4a52 [2020-07-20 01:27:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 01:27:20,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911746144] [2020-07-20 01:27:20,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586703425] [2020-07-20 01:27:20,117 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4dd828bc No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:20,184 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4dd828bc issued 4 check-sat command(s) [2020-07-20 01:27:20,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:20,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 01:27:20,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:20,213 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2020-07-20 01:27:20,214 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:20,219 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:20,219 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:20,219 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2020-07-20 01:27:22,255 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_3 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_3))) is different from true [2020-07-20 01:27:24,309 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_4 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_4))) is different from true [2020-07-20 01:27:26,338 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_5 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_5))) is different from true [2020-07-20 01:27:26,363 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2020-07-20 01:27:26,364 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:26,369 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:26,371 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-20 01:27:26,371 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:21 [2020-07-20 01:27:26,404 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:27:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2020-07-20 01:27:26,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:26,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 18 [2020-07-20 01:27:26,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294800101] [2020-07-20 01:27:26,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 01:27:26,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:26,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 01:27:26,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=183, Unknown=3, NotChecked=84, Total=306 [2020-07-20 01:27:26,459 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 18 states. [2020-07-20 01:27:30,783 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 01:27:32,837 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 01:27:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:41,148 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-07-20 01:27:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 01:27:41,149 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-07-20 01:27:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:41,150 INFO L225 Difference]: With dead ends: 48 [2020-07-20 01:27:41,150 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:27:41,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=105, Invalid=500, Unknown=7, NotChecked=144, Total=756 [2020-07-20 01:27:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:27:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:27:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:27:41,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:27:41,155 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-07-20 01:27:41,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:41,155 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:27:41,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 01:27:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:27:41,156 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:27:41,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:41,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:27:41,855 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-07-20 01:27:41,957 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:27:41,957 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-20 01:27:41,957 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:27:41,957 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:27:41,958 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:27:41,958 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:27:41,958 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:27:41,958 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-07-20 01:27:41,958 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-20 01:27:41,958 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-07-20 01:27:41,959 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-07-20 01:27:41,959 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 38 52) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|)) [2020-07-20 01:27:41,959 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 38 52) no Hoare annotation was computed. [2020-07-20 01:27:41,959 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |main_#t~malloc10.base|)) (= 0 main_~ai~1) (= 0 main_~ax~1) (= .cse0 (select |#memory_int| main_~a~0.base)))) [2020-07-20 01:27:41,959 INFO L268 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-07-20 01:27:41,960 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |main_#t~malloc10.base|)) (= .cse0 (select |#memory_int| main_~a~0.base)))) [2020-07-20 01:27:41,960 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 38 52) no Hoare annotation was computed. [2020-07-20 01:27:41,960 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-07-20 01:27:41,960 INFO L268 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-07-20 01:27:41,960 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|)) [2020-07-20 01:27:41,961 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-20 01:27:41,961 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-07-20 01:27:41,961 INFO L264 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|)) [2020-07-20 01:27:41,961 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-07-20 01:27:41,961 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (= 0 |check_#in~x|)) (.cse2 ((as const (Array Int Int)) 0))) (or (and (= 0 check_~ax~0) (let ((.cse0 (<= (+ check_~y 1) check_~n))) (or (and .cse0 (<= 1 check_~x)) (and (<= 0 check_~x) .cse0 .cse1))) (= 0 check_~ai~0) (= .cse2 (select |#memory_int| check_~a.base))) (let ((.cse3 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or (not (<= 1 |check_#in~x|)) .cse3) (or .cse3 (not .cse1)))) (not (= .cse2 (select |#memory_int| |check_#in~a.base|))))) [2020-07-20 01:27:41,962 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-07-20 01:27:41,962 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 36) the Hoare annotation is: true [2020-07-20 01:27:41,962 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-07-20 01:27:41,962 INFO L268 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-07-20 01:27:41,962 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 25) the Hoare annotation is: (let ((.cse1 (= 0 |check_#in~x|)) (.cse2 ((as const (Array Int Int)) 0))) (or (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or (not (<= 1 |check_#in~x|)) .cse0) (or .cse0 (not .cse1)))) (not (= .cse2 (select |#memory_int| |check_#in~a.base|))) (and (let ((.cse3 (<= (+ check_~y 1) check_~n))) (or (and .cse3 (<= 1 check_~x)) (and (<= 0 check_~x) .cse3 .cse1))) (= .cse2 (select |#memory_int| check_~a.base))))) [2020-07-20 01:27:41,963 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-07-20 01:27:41,963 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 36) no Hoare annotation was computed. [2020-07-20 01:27:41,963 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 (<= 1 |check_#in~x|)) (.cse2 (= 0 |check_#in~x|)) (.cse3 ((as const (Array Int Int)) 0))) (or (let ((.cse1 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or (not .cse0) .cse1) (or .cse1 (not .cse2)))) (not (= .cse3 (select |#memory_int| |check_#in~a.base|))) (and (let ((.cse4 (<= (+ check_~y 1) check_~n))) (or (and .cse0 .cse4 (<= 1 check_~x)) (and (= 0 check_~x) .cse4 .cse2))) (= .cse3 (select |#memory_int| check_~a.base))))) [2020-07-20 01:27:41,964 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (let ((.cse0 (<= 1 |check_#in~x|)) (.cse2 (= 0 |check_#in~x|)) (.cse3 ((as const (Array Int Int)) 0))) (or (let ((.cse1 (not (<= (+ |check_#in~y| 1) |check_#in~n|)))) (and (or (not .cse0) .cse1) (or .cse1 (not .cse2)))) (not (= .cse3 (select |#memory_int| |check_#in~a.base|))) (and (let ((.cse4 (<= (+ check_~y 1) check_~n))) (or (and .cse0 .cse4 (<= 1 check_~x)) (and (= 0 check_~x) .cse4 .cse2))) (= .cse3 (select |#memory_int| check_~a.base))))) [2020-07-20 01:27:41,964 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-20 01:27:41,964 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 36) no Hoare annotation was computed. [2020-07-20 01:27:41,964 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-07-20 01:27:41,964 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-07-20 01:27:41,965 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-07-20 01:27:41,965 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-07-20 01:27:41,965 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-07-20 01:27:41,965 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-07-20 01:27:41,965 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-07-20 01:27:41,965 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:27:41,966 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:27:41,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:27:41 BoogieIcfgContainer [2020-07-20 01:27:41,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:27:41,974 INFO L168 Benchmark]: Toolchain (without parser) took 30692.23 ms. Allocated memory was 146.3 MB in the beginning and 267.9 MB in the end (delta: 121.6 MB). Free memory was 102.2 MB in the beginning and 101.7 MB in the end (delta: 544.5 kB). Peak memory consumption was 122.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:27:41,974 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:27:41,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.23 ms. Allocated memory is still 146.3 MB. Free memory was 101.8 MB in the beginning and 91.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:27:41,976 INFO L168 Benchmark]: Boogie Preprocessor took 135.24 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 91.2 MB in the beginning and 180.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:27:41,977 INFO L168 Benchmark]: RCFGBuilder took 432.15 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 161.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:27:41,978 INFO L168 Benchmark]: TraceAbstraction took 29843.57 ms. Allocated memory was 203.4 MB in the beginning and 267.9 MB in the end (delta: 64.5 MB). Free memory was 161.5 MB in the beginning and 101.7 MB in the end (delta: 59.9 MB). Peak memory consumption was 124.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:27:41,981 INFO L336 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 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.23 ms. Allocated memory is still 146.3 MB. Free memory was 101.8 MB in the beginning and 91.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.24 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 91.2 MB in the beginning and 180.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.15 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 161.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29843.57 ms. Allocated memory was 203.4 MB in the beginning and 267.9 MB in the end (delta: 64.5 MB). Free memory was 161.5 MB in the beginning and 101.7 MB in the end (delta: 59.9 MB). Peak memory consumption was 124.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.1s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 212 SDtfs, 269 SDslu, 500 SDs, 0 SdLazy, 1090 SolverSat, 227 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 191 SyntacticMatches, 7 SemanticMatches, 86 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 25.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=2, 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, 6 MinimizatonAttempts, 29 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 50 PreInvPairs, 60 NumberOfFragments, 326 HoareAnnotationTreeSize, 50 FomulaSimplifications, 382 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 525 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 375 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 366 ConstructedInterpolants, 22 QuantifiedInterpolants, 45974 SizeOfPredicates, 24 NumberOfNonLiveVariables, 498 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 99/110 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...