/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:20:08,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:20:08,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:20:09,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 07:20:09,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 07:20:09,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 07:20:09,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 07:20:09,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 07:20:09,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 07:20:09,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 07:20:09,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 07:20:09,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 07:20:09,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:20:09,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:20:09,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:20:09,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:20:09,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:20:09,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:20:09,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:20:09,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:20:09,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:20:09,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:20:09,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:20:09,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:20:09,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 07:20:09,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 07:20:09,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 07:20:09,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 07:20:09,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 07:20:09,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 07:20:09,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 07:20:09,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 07:20:09,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 07:20:09,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 07:20:09,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 07:20:09,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 07:20:09,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 07:20:09,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 07:20:09,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:20:09,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:20:09,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:20:09,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 07:20:09,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:20:09,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:20:09,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:20:09,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:20:09,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:20:09,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:20:09,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:20:09,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:20:09,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:20:09,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:20:09,121 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:20:09,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:20:09,122 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:20:09,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:20:09,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:20:09,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:20:09,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:20:09,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:20:09,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:20:09,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:20:09,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:20:09,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:20:09,123 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:20:09,124 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:20:09,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:20:09,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:20:09,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:20:09,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:20:09,741 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:20:09,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2021-05-01 07:20:09,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8caf29437/099df2a0bd804462a2a7850583685a83/FLAGd2eeccb58 [2021-05-01 07:20:10,604 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:20:10,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2021-05-01 07:20:10,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8caf29437/099df2a0bd804462a2a7850583685a83/FLAGd2eeccb58 [2021-05-01 07:20:10,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8caf29437/099df2a0bd804462a2a7850583685a83 [2021-05-01 07:20:10,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:20:10,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:20:10,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:20:10,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:20:10,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:20:10,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:20:10" (1/1) ... [2021-05-01 07:20:10,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19632501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:10, skipping insertion in model container [2021-05-01 07:20:10,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:20:10" (1/1) ... [2021-05-01 07:20:10,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:20:10,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:20:11,166 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c[986,999] [2021-05-01 07:20:11,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:20:11,186 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:20:11,219 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c[986,999] [2021-05-01 07:20:11,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:20:11,248 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:20:11,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:11 WrapperNode [2021-05-01 07:20:11,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:20:11,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:20:11,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:20:11,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:20:11,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:11" (1/1) ... [2021-05-01 07:20:11,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:11" (1/1) ... [2021-05-01 07:20:11,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:11" (1/1) ... [2021-05-01 07:20:11,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:11" (1/1) ... [2021-05-01 07:20:11,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:11" (1/1) ... [2021-05-01 07:20:11,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:11" (1/1) ... [2021-05-01 07:20:11,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:11" (1/1) ... [2021-05-01 07:20:11,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:20:11,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:20:11,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:20:11,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:20:11,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:11" (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 [2021-05-01 07:20:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:20:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:20:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:20:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:20:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:20:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:20:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:20:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:20:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:20:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:20:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:20:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 07:20:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:20:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:20:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:20:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:20:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:20:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:20:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:20:11,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:20:11,916 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-01 07:20:11,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:20:11 BoogieIcfgContainer [2021-05-01 07:20:11,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:20:11,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:20:11,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:20:11,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:20:11,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:20:10" (1/3) ... [2021-05-01 07:20:11,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33154886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:20:11, skipping insertion in model container [2021-05-01 07:20:11,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:20:11" (2/3) ... [2021-05-01 07:20:11,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33154886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:20:11, skipping insertion in model container [2021-05-01 07:20:11,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:20:11" (3/3) ... [2021-05-01 07:20:11,931 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2021-05-01 07:20:11,940 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:20:11,946 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:20:11,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:20:11,998 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:20:11,999 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:20:11,999 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:20:11,999 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:20:11,999 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:20:11,999 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:20:11,999 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:20:12,000 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:20:12,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:20:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 07:20:12,070 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:20:12,072 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:20:12,072 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:20:12,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:20:12,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1088558671, now seen corresponding path program 1 times [2021-05-01 07:20:12,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:20:12,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880854465] [2021-05-01 07:20:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:20:12,195 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:20:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:12,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:12,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:12,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:12,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 07:20:12,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:12,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:20:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:12,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:12,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:20:12,625 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:20:12,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880854465] [2021-05-01 07:20:12,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [880854465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:20:12,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:20:12,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 07:20:12,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978540432] [2021-05-01 07:20:12,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 07:20:12,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:20:12,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 07:20:12,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 07:20:12,654 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:20:12,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:20:12,790 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-05-01 07:20:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 07:20:12,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 07:20:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:20:12,801 INFO L225 Difference]: With dead ends: 26 [2021-05-01 07:20:12,802 INFO L226 Difference]: Without dead ends: 13 [2021-05-01 07:20:12,806 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 179.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 07:20:12,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-01 07:20:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-01 07:20:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:20:12,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-01 07:20:12,901 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-01 07:20:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:20:12,902 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-01 07:20:12,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:20:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-01 07:20:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 07:20:12,903 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:20:12,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:20:12,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:20:12,910 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:20:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:20:12,912 INFO L82 PathProgramCache]: Analyzing trace with hash 614357099, now seen corresponding path program 1 times [2021-05-01 07:20:12,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:20:12,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718479393] [2021-05-01 07:20:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:20:12,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:13,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:20:13,013 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~main__x~0_8 0) InVars {main_~main__x~0=v_main_~main__x~0_8} OutVars{main_~main__x~0=v_main_~main__x~0_8} AuxVars[] AssignedVars[] [2021-05-01 07:20:13,106 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 95.7 percent of original size [2021-05-01 07:20:13,145 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:13,180 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:15,347 WARN L205 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:20:15,349 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:18,123 WARN L205 SmtUtils]: Spent 2.77 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:20:18,125 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:20,324 WARN L205 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:20,325 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:20,331 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:20:20,341 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:24,394 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:20:24,395 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:26,668 WARN L205 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:20:26,669 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:30,802 WARN L205 SmtUtils]: Spent 4.13 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:30,803 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:30,808 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:20:30,810 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-01 07:20:34,870 WARN L205 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:34,873 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,878 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,883 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:36,087 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:20:36,088 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:38,251 WARN L205 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:20:38,252 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:40,570 WARN L205 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:40,571 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:40,572 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:20:40,574 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:20:40,574 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:40,580 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:43,022 WARN L205 SmtUtils]: Spent 2.44 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:20:43,034 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:47,077 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:20:47,079 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:51,143 WARN L205 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:20:51,144 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:51,147 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:20:51,149 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 07:20:53,232 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 9 [2021-05-01 07:20:53,233 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:57,304 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 17 [2021-05-01 07:20:57,305 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:59,454 WARN L205 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-01 07:20:59,455 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:59,461 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:01,530 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:21:01,531 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:05,581 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:05,583 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:07,767 WARN L205 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:21:07,769 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:07,776 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:21:14,416 WARN L205 SmtUtils]: Spent 6.64 s on a formula simplification that was a NOOP. DAG size: 12 [2021-05-01 07:21:14,418 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,578 WARN L205 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 8 [2021-05-01 07:21:16,580 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,586 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:20,679 WARN L205 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:21:20,682 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:23,558 WARN L205 SmtUtils]: Spent 2.87 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:23,559 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:24,765 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:21:24,767 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:24,783 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:21:24,789 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:24,796 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:26,880 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:21:26,882 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,935 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:21:28,937 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:31,364 WARN L205 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:31,366 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:31,369 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:21:31,375 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:33,474 WARN L205 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:21:33,476 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:35,541 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:35,544 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:35,705 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:35,707 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:35,710 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:21:35,714 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 07:21:35,720 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:35,734 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:37,767 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:21:37,769 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:41,805 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 5 [2021-05-01 07:21:41,809 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:43,854 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:21:43,856 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:43,860 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:21:43,868 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:21:43,872 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:43,877 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:44,840 WARN L205 SmtUtils]: Spent 960.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 07:21:44,842 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,769 WARN L205 SmtUtils]: Spent 26.93 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:22:11,771 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:13,801 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:22:13,803 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:13,804 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:22:13,806 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:22:13,832 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:13,837 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:13,862 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:20,733 WARN L205 SmtUtils]: Spent 6.87 s on a formula simplification that was a NOOP. DAG size: 9 [2021-05-01 07:22:20,734 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:22,797 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:22:22,799 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:22,802 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:22:22,871 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:22,906 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:22,913 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:25,026 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:22:25,028 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:29,065 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 3 [2021-05-01 07:22:29,067 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:31,110 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 07:22:31,112 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:31,115 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:22:31,159 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:31,219 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:31,264 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:31,273 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:31,286 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:31,296 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:31,304 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:31,315 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:31,321 WARN L245 tifierPushTermWalker]: treesize reduction 10, result has 95.7 percent of original size 223 [2021-05-01 07:23:01,201 WARN L205 SmtUtils]: Spent 29.88 s on a formula simplification that was a NOOP. DAG size: 78 [2021-05-01 07:23:01,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:23:01,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:23:01,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:23:01,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:23:01,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:23:01,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:23:01,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:23:01,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:23:01,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 396 [2021-05-01 07:23:01,435 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 241 [2021-05-01 07:23:01,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:23:01,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:23:01,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:23:01,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:23:01,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:23:01,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:23:01,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:23:01,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:01,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:23:01,685 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 248 [2021-05-01 07:23:01,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8254 [2021-05-01 07:23:01,693 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:23:01,740 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 07:23:01,740 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 07:23:01,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:23:01,769 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 07:23:01,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:23:01 BoogieIcfgContainer [2021-05-01 07:23:01,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 07:23:01,778 INFO L168 Benchmark]: Toolchain (without parser) took 170830.60 ms. Allocated memory was 177.2 MB in the beginning and 212.9 MB in the end (delta: 35.7 MB). Free memory was 143.6 MB in the beginning and 153.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:01,779 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 177.2 MB. Free memory is still 159.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:23:01,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.27 ms. Allocated memory is still 177.2 MB. Free memory was 143.4 MB in the beginning and 133.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:01,780 INFO L168 Benchmark]: Boogie Preprocessor took 58.73 ms. Allocated memory is still 177.2 MB. Free memory was 133.7 MB in the beginning and 132.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:01,780 INFO L168 Benchmark]: RCFGBuilder took 608.11 ms. Allocated memory is still 177.2 MB. Free memory was 132.3 MB in the beginning and 147.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:01,785 INFO L168 Benchmark]: TraceAbstraction took 169855.88 ms. Allocated memory was 177.2 MB in the beginning and 212.9 MB in the end (delta: 35.7 MB). Free memory was 147.5 MB in the beginning and 153.5 MB in the end (delta: -6.1 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:01,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 177.2 MB. Free memory is still 159.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.27 ms. Allocated memory is still 177.2 MB. Free memory was 143.4 MB in the beginning and 133.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.73 ms. Allocated memory is still 177.2 MB. Free memory was 133.7 MB in the beginning and 132.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 608.11 ms. Allocated memory is still 177.2 MB. Free memory was 132.3 MB in the beginning and 147.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 169855.88 ms. Allocated memory was 177.2 MB in the beginning and 212.9 MB in the end (delta: 35.7 MB). Free memory was 147.5 MB in the beginning and 153.5 MB in the end (delta: -6.1 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L12] int __return_65; [L15] int main__x; [L16] int main__y; [L17] main__x = -50 [L18] main__y = __VERIFIER_nondet_int() [L19] COND FALSE !(!(-1000 < main__y)) [L25] COND FALSE !(!(main__y < 1000000)) [L32] COND TRUE main__x < 0 [L34] main__x = main__x + main__y [L35] int main____CPAchecker_TMP_0 = main__y; [L36] main__y = main__y + 1 [L32] COND FALSE !(main__x < 0) [L42] int __tmp_1; [L43] __tmp_1 = main__y > 0 [L44] int __VERIFIER_assert__cond; [L45] __VERIFIER_assert__cond = __tmp_1 [L46] COND TRUE __VERIFIER_assert__cond == 0 [L48] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 169755.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 41.5ms, AutomataDifference: 168.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 29.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 13 SDslu, 10 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 179.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 58.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 could not prove your program: unable to determine feasibility of some traces [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...