/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/matrix-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:24:32,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:24:32,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:24:32,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:24:32,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:24:32,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:24:32,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:24:32,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:24:32,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:24:32,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:24:32,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:24:32,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:24:32,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:24:32,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:24:32,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:24:32,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:24:32,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:24:32,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:24:32,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:24:32,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:24:32,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:24:32,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:24:32,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:24:32,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:24:32,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:24:32,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:24:32,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:24:32,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:24:32,843 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 [2019-11-06 21:24:32,857 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:24:32,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:24:32,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:24:32,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:24:32,859 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:24:32,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:24:32,860 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:24:32,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:24:32,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:24:32,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:24:32,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:24:32,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:24:32,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:24:32,861 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:24:32,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:24:32,862 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:24:32,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:24:32,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:24:32,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:24:32,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:24:32,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:24:32,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:24:32,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:24:32,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:24:32,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:24:32,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:24:32,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:24:32,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:24:32,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:24:33,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:24:33,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:24:33,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:24:33,208 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:24:33,209 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:24:33,209 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-1.c [2019-11-06 21:24:33,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/443039c42/68653345734d4ff98cd3878c81073ebe/FLAG5270b426b [2019-11-06 21:24:33,751 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:24:33,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-1.c [2019-11-06 21:24:33,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/443039c42/68653345734d4ff98cd3878c81073ebe/FLAG5270b426b [2019-11-06 21:24:34,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/443039c42/68653345734d4ff98cd3878c81073ebe [2019-11-06 21:24:34,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:24:34,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:24:34,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:24:34,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:24:34,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:24:34,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:24:34" (1/1) ... [2019-11-06 21:24:34,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21332969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34, skipping insertion in model container [2019-11-06 21:24:34,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:24:34" (1/1) ... [2019-11-06 21:24:34,124 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:24:34,139 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:24:34,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:24:34,344 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:24:34,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:24:34,463 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:24:34,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34 WrapperNode [2019-11-06 21:24:34,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:24:34,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:24:34,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:24:34,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:24:34,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34" (1/1) ... [2019-11-06 21:24:34,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34" (1/1) ... [2019-11-06 21:24:34,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34" (1/1) ... [2019-11-06 21:24:34,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34" (1/1) ... [2019-11-06 21:24:34,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34" (1/1) ... [2019-11-06 21:24:34,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34" (1/1) ... [2019-11-06 21:24:34,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34" (1/1) ... [2019-11-06 21:24:34,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:24:34,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:24:34,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:24:34,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:24:34,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34" (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 [2019-11-06 21:24:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:24:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:24:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:24:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:24:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:24:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:24:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:24:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:24:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:24:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:24:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:24:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:24:34,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:24:34,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:24:34,816 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:24:34,816 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-06 21:24:34,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:24:34 BoogieIcfgContainer [2019-11-06 21:24:34,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:24:34,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:24:34,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:24:34,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:24:34,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:24:34" (1/3) ... [2019-11-06 21:24:34,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491b8505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:24:34, skipping insertion in model container [2019-11-06 21:24:34,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:24:34" (2/3) ... [2019-11-06 21:24:34,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491b8505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:24:34, skipping insertion in model container [2019-11-06 21:24:34,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:24:34" (3/3) ... [2019-11-06 21:24:34,836 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2019-11-06 21:24:34,862 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:24:34,871 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:24:34,892 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:24:34,914 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:24:34,914 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:24:34,914 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:24:34,914 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:24:34,915 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:24:34,915 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:24:34,915 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:24:34,915 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:24:34,932 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-06 21:24:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-06 21:24:34,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:24:34,939 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:24:34,940 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:24:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:24:34,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1330517862, now seen corresponding path program 1 times [2019-11-06 21:24:34,952 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:24:34,952 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891815040] [2019-11-06 21:24:34,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:24:35,029 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:24:35,030 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531633134] [2019-11-06 21:24:35,030 INFO L94 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 [2019-11-06 21:24:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:24:35,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 21:24:35,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:24:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:24:35,111 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891815040] [2019-11-06 21:24:35,112 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:24:35,112 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531633134] [2019-11-06 21:24:35,113 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:24:35,113 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:24:35,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185684512] [2019-11-06 21:24:35,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:24:35,118 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:24:35,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:24:35,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:24:35,131 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-11-06 21:24:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:24:35,155 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2019-11-06 21:24:35,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:24:35,157 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-06 21:24:35,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:24:35,165 INFO L225 Difference]: With dead ends: 42 [2019-11-06 21:24:35,165 INFO L226 Difference]: Without dead ends: 17 [2019-11-06 21:24:35,169 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:24:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-06 21:24:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-06 21:24:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-06 21:24:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-06 21:24:35,204 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2019-11-06 21:24:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:24:35,205 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-06 21:24:35,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:24:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-06 21:24:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-06 21:24:35,206 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:24:35,206 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:24:35,410 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:35,411 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:24:35,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:24:35,412 INFO L82 PathProgramCache]: Analyzing trace with hash 672047389, now seen corresponding path program 1 times [2019-11-06 21:24:35,413 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:24:35,413 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032728238] [2019-11-06 21:24:35,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:24:35,424 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:24:35,424 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106473145] [2019-11-06 21:24:35,424 INFO L94 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 [2019-11-06 21:24:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:24:35,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:24:35,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:24:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:24:35,511 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032728238] [2019-11-06 21:24:35,513 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:24:35,513 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106473145] [2019-11-06 21:24:35,513 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:24:35,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 21:24:35,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748556393] [2019-11-06 21:24:35,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:24:35,516 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:24:35,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:24:35,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:24:35,518 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2019-11-06 21:24:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:24:35,561 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-11-06 21:24:35,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:24:35,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-06 21:24:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:24:35,563 INFO L225 Difference]: With dead ends: 28 [2019-11-06 21:24:35,563 INFO L226 Difference]: Without dead ends: 22 [2019-11-06 21:24:35,564 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:24:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-06 21:24:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-06 21:24:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-06 21:24:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-06 21:24:35,570 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2019-11-06 21:24:35,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:24:35,571 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-06 21:24:35,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:24:35,571 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-06 21:24:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 21:24:35,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:24:35,573 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:24:35,775 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:35,776 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:24:35,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:24:35,777 INFO L82 PathProgramCache]: Analyzing trace with hash -830834987, now seen corresponding path program 1 times [2019-11-06 21:24:35,778 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:24:35,778 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700983498] [2019-11-06 21:24:35,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:24:35,788 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:24:35,789 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076406685] [2019-11-06 21:24:35,789 INFO L94 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 [2019-11-06 21:24:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:24:35,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-06 21:24:35,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:24:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:24:35,874 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700983498] [2019-11-06 21:24:35,874 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:24:35,874 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076406685] [2019-11-06 21:24:35,875 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:24:35,875 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:24:35,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319533485] [2019-11-06 21:24:35,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:24:35,876 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:24:35,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:24:35,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:24:35,877 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2019-11-06 21:24:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:24:35,953 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-11-06 21:24:35,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:24:35,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-06 21:24:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:24:35,955 INFO L225 Difference]: With dead ends: 36 [2019-11-06 21:24:35,955 INFO L226 Difference]: Without dead ends: 25 [2019-11-06 21:24:35,957 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:24:35,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-06 21:24:35,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2019-11-06 21:24:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-06 21:24:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-06 21:24:35,965 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-11-06 21:24:35,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:24:35,965 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-06 21:24:35,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:24:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-06 21:24:35,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 21:24:35,969 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:24:35,969 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:24:36,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:36,173 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:24:36,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:24:36,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1529445450, now seen corresponding path program 1 times [2019-11-06 21:24:36,174 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:24:36,175 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084806175] [2019-11-06 21:24:36,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:24:36,187 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:24:36,187 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028593291] [2019-11-06 21:24:36,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:24:36,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-06 21:24:36,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:24:36,372 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-06 21:24:36,373 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:36,759 WARN L191 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 27 [2019-11-06 21:24:36,760 INFO L567 ElimStorePlain]: treesize reduction 349, result has 9.4 percent of original size [2019-11-06 21:24:36,760 INFO L464 ElimStorePlain]: Eliminatee v_prenex_1 vanished before elimination [2019-11-06 21:24:36,760 INFO L464 ElimStorePlain]: Eliminatee v_prenex_13 vanished before elimination [2019-11-06 21:24:36,760 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_int_7| vanished before elimination [2019-11-06 21:24:36,761 INFO L464 ElimStorePlain]: Eliminatee v_prenex_11 vanished before elimination [2019-11-06 21:24:36,774 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2019-11-06 21:24:36,774 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:36,786 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:24:36,786 INFO L464 ElimStorePlain]: Eliminatee v_prenex_5 vanished before elimination [2019-11-06 21:24:36,787 INFO L464 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2019-11-06 21:24:36,787 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:24:36,788 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:441, output treesize:10 [2019-11-06 21:24:36,805 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-06 21:24:36,807 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:36,809 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:24:36,809 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:24:36,809 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-06 21:24:36,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:24:36,859 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084806175] [2019-11-06 21:24:36,859 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:24:36,859 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028593291] [2019-11-06 21:24:36,859 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:24:36,860 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-06 21:24:36,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432208202] [2019-11-06 21:24:36,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:24:36,861 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:24:36,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:24:36,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:24:36,864 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 8 states. [2019-11-06 21:24:37,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:24:37,048 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2019-11-06 21:24:37,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:24:37,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-06 21:24:37,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:24:37,050 INFO L225 Difference]: With dead ends: 37 [2019-11-06 21:24:37,050 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 21:24:37,051 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:24:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 21:24:37,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2019-11-06 21:24:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-06 21:24:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-06 21:24:37,056 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2019-11-06 21:24:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:24:37,057 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-06 21:24:37,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:24:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-06 21:24:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 21:24:37,058 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:24:37,058 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:24:37,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:37,268 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:24:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:24:37,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1922472460, now seen corresponding path program 1 times [2019-11-06 21:24:37,269 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:24:37,270 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401495957] [2019-11-06 21:24:37,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:24:37,278 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:24:37,279 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87503475] [2019-11-06 21:24:37,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:24:37,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-06 21:24:37,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:24:37,384 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-06 21:24:37,384 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:37,441 INFO L567 ElimStorePlain]: treesize reduction 138, result has 26.6 percent of original size [2019-11-06 21:24:37,441 INFO L464 ElimStorePlain]: Eliminatee v_prenex_18 vanished before elimination [2019-11-06 21:24:37,447 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2019-11-06 21:24:37,447 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:37,464 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:24:37,465 INFO L464 ElimStorePlain]: Eliminatee v_prenex_16 vanished before elimination [2019-11-06 21:24:37,465 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:24:37,465 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:251, output treesize:28 [2019-11-06 21:24:37,543 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-11-06 21:24:37,544 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:37,546 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:24:37,546 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:24:37,547 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2019-11-06 21:24:37,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:24:37,589 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401495957] [2019-11-06 21:24:37,589 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:24:37,589 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87503475] [2019-11-06 21:24:37,589 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:24:37,590 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2019-11-06 21:24:37,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827040018] [2019-11-06 21:24:37,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:24:37,591 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:24:37,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:24:37,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:24:37,591 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 12 states. [2019-11-06 21:24:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:24:37,807 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-11-06 21:24:37,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 21:24:37,807 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-06 21:24:37,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:24:37,808 INFO L225 Difference]: With dead ends: 49 [2019-11-06 21:24:37,808 INFO L226 Difference]: Without dead ends: 32 [2019-11-06 21:24:37,809 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:24:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-06 21:24:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2019-11-06 21:24:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-06 21:24:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-06 21:24:37,815 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 18 [2019-11-06 21:24:37,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:24:37,816 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-06 21:24:37,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:24:37,816 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-06 21:24:37,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-06 21:24:37,817 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:24:37,817 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:24:38,020 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:38,022 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:24:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:24:38,022 INFO L82 PathProgramCache]: Analyzing trace with hash -422232267, now seen corresponding path program 2 times [2019-11-06 21:24:38,023 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:24:38,023 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485857433] [2019-11-06 21:24:38,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:24:38,032 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:24:38,032 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306761327] [2019-11-06 21:24:38,033 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:38,106 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 21:24:38,106 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:24:38,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:24:38,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:24:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:24:38,142 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485857433] [2019-11-06 21:24:38,143 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:24:38,143 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306761327] [2019-11-06 21:24:38,143 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:24:38,144 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-06 21:24:38,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897573854] [2019-11-06 21:24:38,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:24:38,144 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:24:38,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:24:38,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:24:38,145 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-11-06 21:24:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:24:38,185 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2019-11-06 21:24:38,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:24:38,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-06 21:24:38,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:24:38,187 INFO L225 Difference]: With dead ends: 42 [2019-11-06 21:24:38,187 INFO L226 Difference]: Without dead ends: 26 [2019-11-06 21:24:38,187 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:24:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-06 21:24:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-06 21:24:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-06 21:24:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-11-06 21:24:38,192 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2019-11-06 21:24:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:24:38,192 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-11-06 21:24:38,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:24:38,193 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-11-06 21:24:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 21:24:38,193 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:24:38,193 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:24:38,400 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:38,401 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:24:38,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:24:38,402 INFO L82 PathProgramCache]: Analyzing trace with hash 239488911, now seen corresponding path program 3 times [2019-11-06 21:24:38,402 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:24:38,402 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844703829] [2019-11-06 21:24:38,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:24:38,412 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:24:38,412 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502323937] [2019-11-06 21:24:38,412 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:38,472 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-06 21:24:38,472 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:24:38,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-06 21:24:38,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:24:38,527 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-06 21:24:38,527 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,686 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 27 [2019-11-06 21:24:38,686 INFO L567 ElimStorePlain]: treesize reduction 400, result has 8.3 percent of original size [2019-11-06 21:24:38,686 INFO L464 ElimStorePlain]: Eliminatee v_prenex_31 vanished before elimination [2019-11-06 21:24:38,687 INFO L464 ElimStorePlain]: Eliminatee v_prenex_25 vanished before elimination [2019-11-06 21:24:38,687 INFO L464 ElimStorePlain]: Eliminatee v_prenex_23 vanished before elimination [2019-11-06 21:24:38,687 INFO L464 ElimStorePlain]: Eliminatee v_prenex_33 vanished before elimination [2019-11-06 21:24:38,687 INFO L464 ElimStorePlain]: Eliminatee v_prenex_29 vanished before elimination [2019-11-06 21:24:38,690 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2019-11-06 21:24:38,691 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,699 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:24:38,699 INFO L464 ElimStorePlain]: Eliminatee v_prenex_27 vanished before elimination [2019-11-06 21:24:38,700 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,700 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:497, output treesize:10 [2019-11-06 21:24:38,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:38,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:38,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:38,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:38,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:38,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:38,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:38,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 21:24:38,772 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2019-11-06 21:24:38,773 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,786 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-06 21:24:38,786 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,798 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-06 21:24:38,798 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,808 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-06 21:24:38,808 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,842 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:24:38,843 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 126 [2019-11-06 21:24:38,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:38,844 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,852 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-06 21:24:38,853 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,859 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-06 21:24:38,859 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,864 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-06 21:24:38,864 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-06 21:24:38,975 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2019-11-06 21:24:38,975 INFO L567 ElimStorePlain]: treesize reduction 47, result has 77.2 percent of original size [2019-11-06 21:24:38,976 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-06 21:24:38,976 INFO L221 ElimStorePlain]: Needed 9 recursive calls to eliminate 2 variables, input treesize:701, output treesize:113 [2019-11-06 21:24:39,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,055 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,055 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,057 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,073 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,073 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,081 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,363 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:24:39,364 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2019-11-06 21:24:39,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,366 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-06 21:24:39,395 INFO L567 ElimStorePlain]: treesize reduction 31, result has 35.4 percent of original size [2019-11-06 21:24:39,396 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:24:39,397 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:54, output treesize:3 [2019-11-06 21:24:39,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:24:39,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:24:39,435 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844703829] [2019-11-06 21:24:39,436 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:24:39,436 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502323937] [2019-11-06 21:24:39,436 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:24:39,436 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-11-06 21:24:39,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152911] [2019-11-06 21:24:39,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:24:39,437 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:24:39,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:24:39,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:24:39,437 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2019-11-06 21:24:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:24:39,723 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-11-06 21:24:39,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 21:24:39,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-11-06 21:24:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:24:39,725 INFO L225 Difference]: With dead ends: 37 [2019-11-06 21:24:39,725 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 21:24:39,726 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:24:39,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 21:24:39,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2019-11-06 21:24:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 21:24:39,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-11-06 21:24:39,730 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2019-11-06 21:24:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:24:39,730 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-11-06 21:24:39,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:24:39,731 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-11-06 21:24:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 21:24:39,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:24:39,732 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:24:39,934 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:39,935 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:24:39,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:24:39,936 INFO L82 PathProgramCache]: Analyzing trace with hash -153538099, now seen corresponding path program 1 times [2019-11-06 21:24:39,936 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:24:39,936 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785345286] [2019-11-06 21:24:39,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:24:39,946 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:24:39,946 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297519750] [2019-11-06 21:24:39,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:24:39,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:24:39,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:24:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 21:24:40,013 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785345286] [2019-11-06 21:24:40,014 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:24:40,014 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297519750] [2019-11-06 21:24:40,014 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:24:40,014 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-06 21:24:40,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483781696] [2019-11-06 21:24:40,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:24:40,015 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:24:40,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:24:40,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:24:40,016 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 4 states. [2019-11-06 21:24:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:24:40,031 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2019-11-06 21:24:40,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:24:40,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-11-06 21:24:40,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:24:40,033 INFO L225 Difference]: With dead ends: 31 [2019-11-06 21:24:40,033 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:24:40,033 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:24:40,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:24:40,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:24:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:24:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:24:40,034 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-11-06 21:24:40,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:24:40,037 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:24:40,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:24:40,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:24:40,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:24:40,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:24:40,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:24:40,401 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:24:40,401 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:24:40,402 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:24:40,402 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:24:40,402 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:24:40,402 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:24:40,402 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:24:40,402 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 31) no Hoare annotation was computed. [2019-11-06 21:24:40,402 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 26) no Hoare annotation was computed. [2019-11-06 21:24:40,403 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#matriz~0.base|)) (.cse1 (= 1 main_~N_COL~0)) (.cse3 (= 1 main_~N_LIN~0)) (.cse2 (= main_~j~0 1))) (or (and (<= (+ (select .cse0 (+ (* (mod (+ main_~j~0 4294967295) 4294967296) 4) |main_~#matriz~0.offset|)) 1) main_~maior~0) .cse1 .cse2) (and .cse1 (= main_~j~0 0) .cse3) (and (<= (select .cse0 |main_~#matriz~0.offset|) main_~maior~0) (= 1 main_~k~0) .cse1 .cse3 .cse2))) [2019-11-06 21:24:40,403 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 26) no Hoare annotation was computed. [2019-11-06 21:24:40,403 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 31) no Hoare annotation was computed. [2019-11-06 21:24:40,403 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 31) the Hoare annotation is: true [2019-11-06 21:24:40,403 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (and (<= |main_#t~mem6| main_~maior~0) (<= (select (select |#memory_int| |main_~#matriz~0.base|) |main_~#matriz~0.offset|) main_~maior~0)) [2019-11-06 21:24:40,403 INFO L443 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2019-11-06 21:24:40,404 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 25) no Hoare annotation was computed. [2019-11-06 21:24:40,404 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 26) no Hoare annotation was computed. [2019-11-06 21:24:40,404 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 26) the Hoare annotation is: (let ((.cse0 (= 1 main_~N_COL~0)) (.cse2 (= 1 main_~N_LIN~0)) (.cse1 (= main_~j~0 0))) (or (and (= main_~k~0 0) .cse0 .cse1 .cse2) (and (<= (select (select |#memory_int| |main_~#matriz~0.base|) |main_~#matriz~0.offset|) main_~maior~0) (= 1 main_~k~0) .cse0 .cse2 .cse1))) [2019-11-06 21:24:40,404 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 21:24:40,404 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:24:40,404 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 21:24:40,404 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 21:24:40,405 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 21:24:40,405 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:24:40,412 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:24:40,418 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:24:40,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:24:40,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:24:40,421 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:24:40,421 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:24:40,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:24:40 BoogieIcfgContainer [2019-11-06 21:24:40,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:24:40,425 INFO L168 Benchmark]: Toolchain (without parser) took 6315.48 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 105.0 MB in the beginning and 166.9 MB in the end (delta: -61.9 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2019-11-06 21:24:40,426 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:24:40,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.68 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 104.8 MB in the beginning and 181.1 MB in the end (delta: -76.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-11-06 21:24:40,427 INFO L168 Benchmark]: Boogie Preprocessor took 37.62 ms. Allocated memory is still 200.8 MB. Free memory was 181.1 MB in the beginning and 177.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-11-06 21:24:40,431 INFO L168 Benchmark]: RCFGBuilder took 322.81 ms. Allocated memory is still 200.8 MB. Free memory was 177.8 MB in the beginning and 163.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-11-06 21:24:40,432 INFO L168 Benchmark]: TraceAbstraction took 5597.02 ms. Allocated memory was 200.8 MB in the beginning and 245.4 MB in the end (delta: 44.6 MB). Free memory was 162.5 MB in the beginning and 166.9 MB in the end (delta: -4.4 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2019-11-06 21:24:40,437 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 353.68 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 104.8 MB in the beginning and 181.1 MB in the end (delta: -76.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.62 ms. Allocated memory is still 200.8 MB. Free memory was 181.1 MB in the beginning and 177.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 322.81 ms. Allocated memory is still 200.8 MB. Free memory was 177.8 MB in the beginning and 163.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5597.02 ms. Allocated memory was 200.8 MB in the beginning and 245.4 MB in the end (delta: 44.6 MB). Free memory was 162.5 MB in the beginning and 166.9 MB in the end (delta: -4.4 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant [2019-11-06 21:24:40,445 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:24:40,445 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((k == 0 && 1 == N_COL) && j == 0) && 1 == N_LIN) || ((((unknown-#memory_int-unknown[matriz][matriz] <= maior && 1 == k) && 1 == N_COL) && 1 == N_LIN) && j == 0) - InvariantResult [Line: 19]: Loop Invariant [2019-11-06 21:24:40,446 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:24:40,446 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:24:40,447 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:24:40,447 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((unknown-#memory_int-unknown[matriz][(j + 4294967295) % 4294967296 * 4 + matriz] + 1 <= maior && 1 == N_COL) && j == 1) || ((1 == N_COL && j == 0) && 1 == N_LIN)) || ((((unknown-#memory_int-unknown[matriz][matriz] <= maior && 1 == k) && 1 == N_COL) && 1 == N_LIN) && j == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 5.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 110 SDtfs, 62 SDslu, 254 SDs, 0 SdLazy, 319 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=7, 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, 8 MinimizatonAttempts, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 25 NumberOfFragments, 105 HoareAnnotationTreeSize, 16 FomulaSimplifications, 98 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 58 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 144 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 136 ConstructedInterpolants, 5 QuantifiedInterpolants, 17837 SizeOfPredicates, 41 NumberOfNonLiveVariables, 582 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 18/35 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...