/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:48:11,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:48:11,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:48:11,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 15:48:11,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 15:48:11,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 15:48:11,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 15:48:11,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 15:48:11,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 15:48:11,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 15:48:11,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 15:48:11,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 15:48:11,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:48:11,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:48:11,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:48:11,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:48:11,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:48:11,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:48:11,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:48:11,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:48:11,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:48:11,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:48:11,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:48:11,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:48:11,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:48:11,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:48:11,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:48:11,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:48:11,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:48:11,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:48:11,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:48:11,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:48:11,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:48:11,970 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:48:11,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:48:11,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:48:11,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:48:11,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:48:11,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:48:11,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:48:11,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:48:11,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:48:11,973 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:48:11,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:48:11,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:48:11,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:48:11,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:48:11,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:48:11,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:48:11,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:48:11,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:48:11,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:48:11,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:48:11,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:48:11,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:48:11,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:48:11,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:48:11,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:48:12,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:48:12,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:48:12,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:48:12,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:48:12,384 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:48:12,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_4-2.c [2021-02-21 15:48:12,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30fb39bc4/701a9c2ec0df47dfb7046803de8a64a4/FLAG051fa931a [2021-02-21 15:48:13,178 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:48:13,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_4-2.c [2021-02-21 15:48:13,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30fb39bc4/701a9c2ec0df47dfb7046803de8a64a4/FLAG051fa931a [2021-02-21 15:48:13,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30fb39bc4/701a9c2ec0df47dfb7046803de8a64a4 [2021-02-21 15:48:13,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:48:13,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:48:13,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:48:13,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:48:13,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:48:13,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:48:13" (1/1) ... [2021-02-21 15:48:13,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f779b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13, skipping insertion in model container [2021-02-21 15:48:13,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:48:13" (1/1) ... [2021-02-21 15:48:13,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:48:13,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:48:13,776 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_4-2.c[370,383] [2021-02-21 15:48:13,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:48:13,799 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:48:13,813 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_4-2.c[370,383] [2021-02-21 15:48:13,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:48:13,832 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:48:13,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13 WrapperNode [2021-02-21 15:48:13,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:48:13,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:48:13,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:48:13,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:48:13,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13" (1/1) ... [2021-02-21 15:48:13,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13" (1/1) ... [2021-02-21 15:48:13,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13" (1/1) ... [2021-02-21 15:48:13,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13" (1/1) ... [2021-02-21 15:48:13,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13" (1/1) ... [2021-02-21 15:48:13,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13" (1/1) ... [2021-02-21 15:48:13,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13" (1/1) ... [2021-02-21 15:48:13,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:48:13,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:48:13,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:48:13,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:48:13,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:48:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:48:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:48:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:48:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 15:48:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:48:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:48:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:48:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:48:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:48:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 15:48:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 15:48:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:48:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:48:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:48:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:48:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:48:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:48:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:48:14,186 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:48:14,187 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 15:48:14,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:48:14 BoogieIcfgContainer [2021-02-21 15:48:14,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:48:14,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:48:14,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:48:14,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:48:14,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:48:13" (1/3) ... [2021-02-21 15:48:14,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657aff12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:48:14, skipping insertion in model container [2021-02-21 15:48:14,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:13" (2/3) ... [2021-02-21 15:48:14,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657aff12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:48:14, skipping insertion in model container [2021-02-21 15:48:14,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:48:14" (3/3) ... [2021-02-21 15:48:14,198 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_4-2.c [2021-02-21 15:48:14,206 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:48:14,211 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:48:14,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:48:14,261 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:48:14,261 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:48:14,261 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:48:14,262 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:48:14,262 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:48:14,262 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:48:14,262 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:48:14,262 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:48:14,279 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-02-21 15:48:14,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 15:48:14,285 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:14,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:48:14,287 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:14,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:14,294 INFO L82 PathProgramCache]: Analyzing trace with hash 132498341, now seen corresponding path program 1 times [2021-02-21 15:48:14,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:14,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845535396] [2021-02-21 15:48:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:14,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:14,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:14,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:14,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 15:48:14,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:14,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-21 15:48:14,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:14,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:14,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:14,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:14,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:14,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:48:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:14,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:14,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:48:14,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845535396] [2021-02-21 15:48:14,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:48:14,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 15:48:14,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142334593] [2021-02-21 15:48:14,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 15:48:14,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:48:14,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 15:48:14,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 15:48:14,825 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 7 states. [2021-02-21 15:48:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:48:15,163 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-02-21 15:48:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 15:48:15,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2021-02-21 15:48:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:48:15,173 INFO L225 Difference]: With dead ends: 34 [2021-02-21 15:48:15,173 INFO L226 Difference]: Without dead ends: 21 [2021-02-21 15:48:15,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-02-21 15:48:15,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-02-21 15:48:15,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-02-21 15:48:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-02-21 15:48:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-02-21 15:48:15,223 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2021-02-21 15:48:15,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:48:15,224 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-02-21 15:48:15,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 15:48:15,224 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-02-21 15:48:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-21 15:48:15,225 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:15,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:48:15,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:48:15,226 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:15,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:15,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1946866940, now seen corresponding path program 1 times [2021-02-21 15:48:15,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:15,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146110445] [2021-02-21 15:48:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:15,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 15:48:15,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 15:48:15,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-21 15:48:15,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:15,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:15,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:48:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:15,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 15:48:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:15,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:48:15,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146110445] [2021-02-21 15:48:15,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840872672] [2021-02-21 15:48:15,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 15:48:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:15,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 29 conjunts are in the unsatisfiable core [2021-02-21 15:48:15,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 15:48:15,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 15:48:15,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 15:48:15,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 15:48:15,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 15:48:15,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-21 15:48:15,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 15:48:15,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 15:48:15,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 15:48:15,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 15:48:15,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:15,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:15,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:15,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:15,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:15,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 15:48:15,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 15:48:15,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:15,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:15,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:15,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:15,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:15,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:48:15,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-21 15:48:15,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 15:48:15,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 15:48:15,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:15,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 15:48:18,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-21 15:48:18,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 15:48:18,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 15:48:18,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 15:48:18,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,248 INFO L841 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-02-21 15:48:18,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 15:48:18,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-21 15:48:18,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 15:48:18,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 15:48:18,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-21 15:48:18,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-21 15:48:18,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-02-21 15:48:18,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:18,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 15:48:18,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 15:48:18,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:18,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:18,332 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-21 15:48:18,333 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-21 15:48:18,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:18,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:18,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:18,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-21 15:48:18,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-21 15:48:18,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-02-21 15:48:18,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131116059] [2021-02-21 15:48:18,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 15:48:18,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:48:18,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 15:48:18,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-02-21 15:48:18,343 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 12 states. [2021-02-21 15:48:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:48:20,859 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-02-21 15:48:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 15:48:20,862 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2021-02-21 15:48:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:48:20,862 INFO L225 Difference]: With dead ends: 20 [2021-02-21 15:48:20,862 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 15:48:20,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-02-21 15:48:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 15:48:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 15:48:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 15:48:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 15:48:20,865 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-02-21 15:48:20,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:48:20,865 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 15:48:20,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 15:48:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 15:48:20,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 15:48:21,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-21 15:48:21,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 15:48:21,340 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 15:48:21,340 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 15:48:21,340 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 15:48:21,340 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 15:48:21,340 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 15:48:21,341 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 15:48:21,341 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 15:48:21,341 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 15:48:21,341 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 15:48:21,341 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 15:48:21,341 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 12 29) the Hoare annotation is: true [2021-02-21 15:48:21,341 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (and (= (mod (* main_~x~0 3) (- 4)) 0) (= (mod (* main_~y~0 3) (- 4)) 0) (= (mod (* main_~z~0 7) (- 8)) 0)) [2021-02-21 15:48:21,342 INFO L185 CegarLoopUtils]: At program point L26-1(lines 20 27) the Hoare annotation is: (and (= (mod (* main_~x~0 3) (- 4)) 0) (= (mod (* main_~y~0 3) (- 4)) 0) (= (mod (* main_~z~0 7) (- 8)) 0)) [2021-02-21 15:48:21,342 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 12 29) no Hoare annotation was computed. [2021-02-21 15:48:21,342 INFO L189 CegarLoopUtils]: For program point L20-2(lines 20 27) no Hoare annotation was computed. [2021-02-21 15:48:21,342 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 12 29) no Hoare annotation was computed. [2021-02-21 15:48:21,342 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2021-02-21 15:48:21,342 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2021-02-21 15:48:21,342 INFO L189 CegarLoopUtils]: For program point L8(line 8) no Hoare annotation was computed. [2021-02-21 15:48:21,343 INFO L189 CegarLoopUtils]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-02-21 15:48:21,343 INFO L189 CegarLoopUtils]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2021-02-21 15:48:21,343 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-02-21 15:48:21,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:48:21 BoogieIcfgContainer [2021-02-21 15:48:21,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:48:21,362 INFO L168 Benchmark]: Toolchain (without parser) took 7815.08 ms. Allocated memory was 170.9 MB in the beginning and 223.3 MB in the end (delta: 52.4 MB). Free memory was 145.6 MB in the beginning and 131.7 MB in the end (delta: 13.9 MB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:21,362 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 170.9 MB. Free memory is still 144.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:48:21,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.95 ms. Allocated memory is still 170.9 MB. Free memory was 144.4 MB in the beginning and 135.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:21,364 INFO L168 Benchmark]: Boogie Preprocessor took 36.19 ms. Allocated memory is still 170.9 MB. Free memory was 135.1 MB in the beginning and 133.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:21,364 INFO L168 Benchmark]: RCFGBuilder took 317.30 ms. Allocated memory is still 170.9 MB. Free memory was 133.6 MB in the beginning and 120.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:21,365 INFO L168 Benchmark]: TraceAbstraction took 7169.58 ms. Allocated memory was 170.9 MB in the beginning and 223.3 MB in the end (delta: 52.4 MB). Free memory was 119.9 MB in the beginning and 131.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:21,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 170.9 MB. Free memory is still 144.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 273.95 ms. Allocated memory is still 170.9 MB. Free memory was 144.4 MB in the beginning and 135.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.19 ms. Allocated memory is still 170.9 MB. Free memory was 135.1 MB in the beginning and 133.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 317.30 ms. Allocated memory is still 170.9 MB. Free memory was 133.6 MB in the beginning and 120.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7169.58 ms. Allocated memory was 170.9 MB in the beginning and 223.3 MB in the end (delta: 52.4 MB). Free memory was 119.9 MB in the beginning and 131.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (x * 3 % -4 == 0 && y * 3 % -4 == 0) && z * 7 % -8 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 29 SDslu, 45 SDs, 0 SdLazy, 71 SolverSat, 17 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 79 HoareAnnotationTreeSize, 9 FomulaSimplifications, 174 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 216 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 4238 SizeOfPredicates, 2 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 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...