/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/loops/matrix-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:25:54,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:54,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:55,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:25:55,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:25:55,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:25:55,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:25:55,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:25:55,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:25:55,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:25:55,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:25:55,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:25:55,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:55,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:55,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:55,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:55,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:55,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:55,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:55,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:55,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:55,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:55,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:55,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:55,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:55,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:55,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:55,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:55,143 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 16:25:55,197 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:55,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:55,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:55,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:55,203 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:55,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:55,203 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:55,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:55,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:55,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:55,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:55,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:55,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:55,206 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:55,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:55,206 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:55,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:55,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:55,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:55,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:55,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:55,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:55,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:55,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:55,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:55,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:55,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:55,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:55,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:55,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:55,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:55,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:55,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:55,700 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:55,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-2.c [2021-02-21 16:25:55,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96363c97a/62ff69b117734c2e85b1f7d2f83be065/FLAGbd1628271 [2021-02-21 16:25:56,346 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:56,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c [2021-02-21 16:25:56,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96363c97a/62ff69b117734c2e85b1f7d2f83be065/FLAGbd1628271 [2021-02-21 16:25:56,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96363c97a/62ff69b117734c2e85b1f7d2f83be065 [2021-02-21 16:25:56,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:56,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:56,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:56,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:56,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:56,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:56" (1/1) ... [2021-02-21 16:25:56,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b96f890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:56, skipping insertion in model container [2021-02-21 16:25:56,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:56" (1/1) ... [2021-02-21 16:25:56,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:56,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:56,925 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c[320,333] [2021-02-21 16:25:56,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:56,957 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:56,972 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c[320,333] [2021-02-21 16:25:56,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:57,008 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:57,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57 WrapperNode [2021-02-21 16:25:57,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:57,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:57,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:57,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:57,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ... [2021-02-21 16:25:57,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ... [2021-02-21 16:25:57,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ... [2021-02-21 16:25:57,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ... [2021-02-21 16:25:57,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ... [2021-02-21 16:25:57,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ... [2021-02-21 16:25:57,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (1/1) ... [2021-02-21 16:25:57,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:57,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:57,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:57,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:57,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (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 16:25:57,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:57,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:57,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:57,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:57,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 16:25:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:57,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:57,466 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 16:25:57,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:57 BoogieIcfgContainer [2021-02-21 16:25:57,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:57,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:57,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:57,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:57,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:56" (1/3) ... [2021-02-21 16:25:57,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64054ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:57, skipping insertion in model container [2021-02-21 16:25:57,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:57" (2/3) ... [2021-02-21 16:25:57,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64054ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:57, skipping insertion in model container [2021-02-21 16:25:57,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:57" (3/3) ... [2021-02-21 16:25:57,478 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2021-02-21 16:25:57,486 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:57,495 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:57,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:57,602 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:57,602 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:57,603 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:57,603 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:57,603 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:57,603 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:57,603 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:57,603 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2021-02-21 16:25:57,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-21 16:25:57,634 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:57,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:25:57,635 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:57,643 INFO L82 PathProgramCache]: Analyzing trace with hash -691068696, now seen corresponding path program 1 times [2021-02-21 16:25:57,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:57,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421949890] [2021-02-21 16:25:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:57,847 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-21 16:25:57,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781287346] [2021-02-21 16:25:57,849 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 16:25:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:58,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2021-02-21 16:25:58,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:25:58,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:58,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:58,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:58,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:58,152 WARN L141 QuantifierPusher]: treesize reduction 1, result has 91.7 percent of original size [2021-02-21 16:25:58,154 WARN L147 QuantifierPusher]: treesize reduction 1, result has 91.7 percent of original size 11 [2021-02-21 16:25:58,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 16:25:58,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:25:58,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:25:58,237 WARN L141 QuantifierPusher]: treesize reduction 7, result has 81.1 percent of original size [2021-02-21 16:25:58,239 WARN L147 QuantifierPusher]: treesize reduction 7, result has 81.1 percent of original size 30 [2021-02-21 16:25:58,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 16:25:58,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 16:25:58,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,281 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 16:25:58,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421949890] [2021-02-21 16:25:58,282 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-02-21 16:25:58,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781287346] [2021-02-21 16:25:58,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:58,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:25:58,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29195085] [2021-02-21 16:25:58,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:25:58,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:58,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:25:58,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:25:58,311 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2021-02-21 16:25:58,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:58,412 INFO L93 Difference]: Finished difference Result 68 states and 100 transitions. [2021-02-21 16:25:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:25:58,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-02-21 16:25:58,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:58,422 INFO L225 Difference]: With dead ends: 68 [2021-02-21 16:25:58,423 INFO L226 Difference]: Without dead ends: 35 [2021-02-21 16:25:58,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:58,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-21 16:25:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2021-02-21 16:25:58,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-21 16:25:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-02-21 16:25:58,473 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2021-02-21 16:25:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:58,473 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-02-21 16:25:58,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:25:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-02-21 16:25:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-21 16:25:58,475 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:58,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:25:58,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-02-21 16:25:58,691 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:58,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1002836895, now seen corresponding path program 1 times [2021-02-21 16:25:58,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:58,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571756454] [2021-02-21 16:25:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:58,729 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-21 16:25:58,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284033827] [2021-02-21 16:25:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:25:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:58,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-02-21 16:25:58,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:25:58,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:58,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:58,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:58,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:58,854 WARN L141 QuantifierPusher]: treesize reduction 1, result has 91.7 percent of original size [2021-02-21 16:25:58,855 WARN L147 QuantifierPusher]: treesize reduction 1, result has 91.7 percent of original size 11 [2021-02-21 16:25:58,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 16:25:58,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:25:58,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:25:58,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:25:58,928 WARN L141 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-02-21 16:25:58,931 WARN L147 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size 34 [2021-02-21 16:25:58,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 16:25:58,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 16:25:58,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:58,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:58,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571756454] [2021-02-21 16:25:58,971 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-02-21 16:25:58,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284033827] [2021-02-21 16:25:58,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:58,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:25:58,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957068757] [2021-02-21 16:25:58,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:25:58,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:58,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:25:58,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:25:58,984 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2021-02-21 16:25:59,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:59,050 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-02-21 16:25:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:25:59,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-02-21 16:25:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:59,052 INFO L225 Difference]: With dead ends: 57 [2021-02-21 16:25:59,052 INFO L226 Difference]: Without dead ends: 32 [2021-02-21 16:25:59,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:59,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-21 16:25:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-02-21 16:25:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-21 16:25:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-02-21 16:25:59,060 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2021-02-21 16:25:59,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:59,060 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-02-21 16:25:59,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:25:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-02-21 16:25:59,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 16:25:59,062 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:59,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:25:59,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:25:59,277 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:59,278 INFO L82 PathProgramCache]: Analyzing trace with hash -230396703, now seen corresponding path program 1 times [2021-02-21 16:25:59,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:59,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618735134] [2021-02-21 16:25:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:59,303 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-21 16:25:59,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470392332] [2021-02-21 16:25:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:25:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:59,391 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:59,418 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:59,468 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:59,468 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:59,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:25:59,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:59 BoogieIcfgContainer [2021-02-21 16:25:59,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:59,716 INFO L168 Benchmark]: Toolchain (without parser) took 3005.85 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 49.3 MB in the end (delta: 77.1 MB). Peak memory consumption was 78.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:59,717 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:59,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.14 ms. Allocated memory is still 152.0 MB. Free memory was 125.3 MB in the beginning and 115.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:59,718 INFO L168 Benchmark]: Boogie Preprocessor took 61.20 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 114.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:59,718 INFO L168 Benchmark]: RCFGBuilder took 395.76 ms. Allocated memory is still 152.0 MB. Free memory was 114.1 MB in the beginning and 97.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:59,719 INFO L168 Benchmark]: TraceAbstraction took 2245.23 ms. Allocated memory is still 152.0 MB. Free memory was 96.8 MB in the beginning and 49.3 MB in the end (delta: 47.4 MB). Peak memory consumption was 49.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:59,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.14 ms. Allocated memory is still 152.0 MB. Free memory was 125.3 MB in the beginning and 115.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.20 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 114.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 395.76 ms. Allocated memory is still 152.0 MB. Free memory was 114.1 MB in the beginning and 97.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2245.23 ms. Allocated memory is still 152.0 MB. Free memory was 96.8 MB in the beginning and 49.3 MB in the end (delta: 47.4 MB). Peak memory consumption was 49.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] unsigned int j,k; [L19] int matriz[N_COL][N_LIN], maior; [L21] maior = __VERIFIER_nondet_int() [L22] j=0 VAL [j=0, maior=0, matriz={4:0}, N_COL=1, N_LIN=1] [L22] COND TRUE jmaior [L28] EXPR matriz[j][k] [L28] maior = matriz[j][k] [L23] k++ VAL [j=0, k=1, maior=1, matriz={4:0}, N_COL=1, N_LIN=1] [L23] COND FALSE !(k