/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/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:44:00,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:44:00,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:44:00,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:44:00,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:44:00,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:44:00,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:44:00,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:44:00,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:44:00,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:44:00,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:44:00,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:44:00,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:44:00,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:44:00,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:44:00,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:44:00,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:44:00,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:44:00,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:44:00,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:44:00,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:44:00,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:44:00,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:44:00,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:44:00,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:44:00,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:44:00,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:44:00,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:44:00,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:44:01,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:44:01,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:44:01,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:44:01,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:44:01,020 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:44:01,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:44:01,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:44:01,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:44:01,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:44:01,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:44:01,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:44:01,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:44:01,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:44:01,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:44:01,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:44:01,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:44:01,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:44:01,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:44:01,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:44:01,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:44:01,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:44:01,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:01,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:44:01,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:44:01,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:44:01,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:44:01,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:44:01,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:44:01,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:44:01,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:44:01,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:44:01,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:44:01,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:44:01,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:44:01,464 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:44:01,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-10-23 18:44:01,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cffda6caf/17f84b1f1fbc4d9f84b24b262c3166fa/FLAGc7e214565 [2020-10-23 18:44:02,233 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:44:02,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-10-23 18:44:02,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cffda6caf/17f84b1f1fbc4d9f84b24b262c3166fa/FLAGc7e214565 [2020-10-23 18:44:02,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cffda6caf/17f84b1f1fbc4d9f84b24b262c3166fa [2020-10-23 18:44:02,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:44:02,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:44:02,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:02,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:44:02,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:44:02,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5cbc18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02, skipping insertion in model container [2020-10-23 18:44:02,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:44:02,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:44:02,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:02,889 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:44:02,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:02,966 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:44:02,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02 WrapperNode [2020-10-23 18:44:02,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:02,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:44:02,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:44:02,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:44:02,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:02,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:03,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:03,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:03,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:03,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:03,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... [2020-10-23 18:44:03,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:44:03,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:44:03,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:44:03,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:44:03,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:44:03,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:44:03,160 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:44:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:44:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:44:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:44:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:44:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:44:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:44:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:44:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:44:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:44:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:44:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:44:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:44:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:44:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:44:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:44:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:44:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:44:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:44:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:44:03,863 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:44:03,864 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 18:44:03,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:03 BoogieIcfgContainer [2020-10-23 18:44:03,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:44:03,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:44:03,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:44:03,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:44:03,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:02" (1/3) ... [2020-10-23 18:44:03,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6701c7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:03, skipping insertion in model container [2020-10-23 18:44:03,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:02" (2/3) ... [2020-10-23 18:44:03,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6701c7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:03, skipping insertion in model container [2020-10-23 18:44:03,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:03" (3/3) ... [2020-10-23 18:44:03,879 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-10-23 18:44:03,891 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:44:03,896 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:44:03,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:44:03,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:44:03,935 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:44:03,935 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:44:03,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:44:03,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:44:03,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:44:03,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:44:03,936 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:44:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-23 18:44:03,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:44:03,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:03,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:03,962 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:03,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:03,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1471395979, now seen corresponding path program 1 times [2020-10-23 18:44:03,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:03,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724242792] [2020-10-23 18:44:03,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:04,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:04,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:04,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724242792] [2020-10-23 18:44:04,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:04,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:44:04,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025660233] [2020-10-23 18:44:04,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:44:04,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:04,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:44:04,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:44:04,221 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 3 states. [2020-10-23 18:44:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:04,439 INFO L93 Difference]: Finished difference Result 95 states and 167 transitions. [2020-10-23 18:44:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:44:04,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-23 18:44:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:04,453 INFO L225 Difference]: With dead ends: 95 [2020-10-23 18:44:04,453 INFO L226 Difference]: Without dead ends: 45 [2020-10-23 18:44:04,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:44:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-23 18:44:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-23 18:44:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-23 18:44:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2020-10-23 18:44:04,523 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 15 [2020-10-23 18:44:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:04,523 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 63 transitions. [2020-10-23 18:44:04,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:44:04,524 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2020-10-23 18:44:04,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 18:44:04,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:04,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:04,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:44:04,526 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:04,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:04,527 INFO L82 PathProgramCache]: Analyzing trace with hash -2104128004, now seen corresponding path program 1 times [2020-10-23 18:44:04,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:04,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725376692] [2020-10-23 18:44:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:04,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725376692] [2020-10-23 18:44:04,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:04,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:44:04,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381792640] [2020-10-23 18:44:04,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:44:04,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:04,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:44:04,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:44:04,672 INFO L87 Difference]: Start difference. First operand 45 states and 63 transitions. Second operand 6 states. [2020-10-23 18:44:05,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:05,297 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2020-10-23 18:44:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:44:05,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-23 18:44:05,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:05,299 INFO L225 Difference]: With dead ends: 53 [2020-10-23 18:44:05,299 INFO L226 Difference]: Without dead ends: 49 [2020-10-23 18:44:05,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:44:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-23 18:44:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-23 18:44:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-23 18:44:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2020-10-23 18:44:05,318 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 16 [2020-10-23 18:44:05,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:05,318 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2020-10-23 18:44:05,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:44:05,319 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2020-10-23 18:44:05,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 18:44:05,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:05,320 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:05,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:44:05,320 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:05,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:05,321 INFO L82 PathProgramCache]: Analyzing trace with hash 168819405, now seen corresponding path program 1 times [2020-10-23 18:44:05,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:05,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398724062] [2020-10-23 18:44:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:44:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:05,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398724062] [2020-10-23 18:44:05,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:05,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 18:44:05,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153176808] [2020-10-23 18:44:05,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:44:05,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:05,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:44:05,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:44:05,444 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand 7 states. [2020-10-23 18:44:06,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:06,018 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2020-10-23 18:44:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:44:06,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-23 18:44:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:06,020 INFO L225 Difference]: With dead ends: 72 [2020-10-23 18:44:06,021 INFO L226 Difference]: Without dead ends: 56 [2020-10-23 18:44:06,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:44:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-23 18:44:06,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-23 18:44:06,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-23 18:44:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-10-23 18:44:06,036 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 21 [2020-10-23 18:44:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:06,037 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-10-23 18:44:06,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:44:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-10-23 18:44:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:44:06,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:06,039 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:06,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:44:06,039 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:06,040 INFO L82 PathProgramCache]: Analyzing trace with hash -2091094462, now seen corresponding path program 1 times [2020-10-23 18:44:06,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:06,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667454947] [2020-10-23 18:44:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 18:44:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:06,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667454947] [2020-10-23 18:44:06,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:06,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 18:44:06,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728711659] [2020-10-23 18:44:06,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:44:06,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:06,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:44:06,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:44:06,161 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 7 states. [2020-10-23 18:44:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:06,627 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2020-10-23 18:44:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:44:06,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-23 18:44:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:06,629 INFO L225 Difference]: With dead ends: 64 [2020-10-23 18:44:06,629 INFO L226 Difference]: Without dead ends: 60 [2020-10-23 18:44:06,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:44:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-23 18:44:06,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-23 18:44:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-23 18:44:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2020-10-23 18:44:06,643 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 22 [2020-10-23 18:44:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:06,643 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2020-10-23 18:44:06,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:44:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-10-23 18:44:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 18:44:06,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:06,646 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:06,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 18:44:06,646 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:06,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:06,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2100010792, now seen corresponding path program 1 times [2020-10-23 18:44:06,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:06,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595709502] [2020-10-23 18:44:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 18:44:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 18:44:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 18:44:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-23 18:44:06,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595709502] [2020-10-23 18:44:06,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488415898] [2020-10-23 18:44:06,961 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 [2020-10-23 18:44:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:07,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-23 18:44:07,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:07,306 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:44:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-23 18:44:07,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:07,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-10-23 18:44:07,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493041636] [2020-10-23 18:44:07,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 18:44:07,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:07,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 18:44:07,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:44:07,353 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 14 states. [2020-10-23 18:44:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:08,099 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2020-10-23 18:44:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:44:08,100 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-23 18:44:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:08,102 INFO L225 Difference]: With dead ends: 90 [2020-10-23 18:44:08,102 INFO L226 Difference]: Without dead ends: 84 [2020-10-23 18:44:08,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-10-23 18:44:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-23 18:44:08,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-10-23 18:44:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-23 18:44:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2020-10-23 18:44:08,121 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 36 [2020-10-23 18:44:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:08,122 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2020-10-23 18:44:08,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 18:44:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2020-10-23 18:44:08,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-23 18:44:08,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:08,125 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:08,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:08,339 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:08,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:08,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2023670277, now seen corresponding path program 1 times [2020-10-23 18:44:08,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:08,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875156702] [2020-10-23 18:44:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 18:44:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 18:44:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 18:44:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 18:44:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 18:44:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-23 18:44:08,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875156702] [2020-10-23 18:44:08,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531536836] [2020-10-23 18:44:08,554 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 [2020-10-23 18:44:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:08,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-23 18:44:08,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:08,875 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:44:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-23 18:44:08,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:44:08,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2020-10-23 18:44:08,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275761387] [2020-10-23 18:44:08,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:44:08,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:08,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:44:08,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-23 18:44:08,917 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand 10 states. [2020-10-23 18:44:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:09,227 INFO L93 Difference]: Finished difference Result 115 states and 151 transitions. [2020-10-23 18:44:09,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:44:09,228 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-23 18:44:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:09,230 INFO L225 Difference]: With dead ends: 115 [2020-10-23 18:44:09,230 INFO L226 Difference]: Without dead ends: 109 [2020-10-23 18:44:09,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-23 18:44:09,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-23 18:44:09,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2020-10-23 18:44:09,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-23 18:44:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 139 transitions. [2020-10-23 18:44:09,255 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 139 transitions. Word has length 49 [2020-10-23 18:44:09,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:09,255 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 139 transitions. [2020-10-23 18:44:09,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:44:09,256 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 139 transitions. [2020-10-23 18:44:09,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-23 18:44:09,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:09,259 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:09,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:09,473 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:09,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1654534495, now seen corresponding path program 1 times [2020-10-23 18:44:09,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:09,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656044722] [2020-10-23 18:44:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 18:44:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 18:44:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 18:44:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 18:44:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-23 18:44:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 18:44:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 18:44:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-23 18:44:09,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656044722] [2020-10-23 18:44:09,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297799531] [2020-10-23 18:44:09,668 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 [2020-10-23 18:44:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:09,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-23 18:44:09,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:10,049 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:44:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-23 18:44:10,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:10,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2020-10-23 18:44:10,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396937181] [2020-10-23 18:44:10,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-23 18:44:10,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:10,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-23 18:44:10,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-10-23 18:44:10,114 INFO L87 Difference]: Start difference. First operand 105 states and 139 transitions. Second operand 19 states. [2020-10-23 18:44:11,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:11,842 INFO L93 Difference]: Finished difference Result 132 states and 179 transitions. [2020-10-23 18:44:11,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 18:44:11,843 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-23 18:44:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:11,844 INFO L225 Difference]: With dead ends: 132 [2020-10-23 18:44:11,845 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:44:11,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 18:44:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:44:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:44:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:44:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:44:11,849 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-10-23 18:44:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:11,850 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:44:11,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-23 18:44:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:44:11,850 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:44:12,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:12,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:44:13,268 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-23 18:44:13,268 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 18:44:13,269 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 18:44:13,269 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-23 18:44:13,269 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-23 18:44:13,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:13,269 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 18:44:13,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:13,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:13,270 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:44:13,270 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:44:13,270 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:13,270 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 18:44:13,270 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:13,270 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:13,270 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:13,270 INFO L270 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,271 INFO L270 CegarLoopResult]: At program point L60-1(line 60) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,271 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 77) no Hoare annotation was computed. [2020-10-23 18:44:13,271 INFO L270 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (<= 0 main_~t~0) (< main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,277 INFO L270 CegarLoopResult]: At program point L56-1(line 56) the Hoare annotation is: (and (<= 0 main_~t~0) (< main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,277 INFO L270 CegarLoopResult]: At program point L48-2(lines 48 72) the Hoare annotation is: (and (<= 0 main_~t~0) (<= 1 main_~tagbuf_len~0) (< main_~t~0 (+ main_~tagbuf_len~0 1))) [2020-10-23 18:44:13,277 INFO L270 CegarLoopResult]: At program point L48-3(lines 48 72) the Hoare annotation is: (let ((.cse0 (<= 0 main_~t~0))) (or (and .cse0 (<= main_~t~0 2) (<= 1 main_~tagbuf_len~0) (< main_~t~0 (+ main_~tagbuf_len~0 1))) (and .cse0 (< main_~t~0 main_~tagbuf_len~0)))) [2020-10-23 18:44:13,277 INFO L270 CegarLoopResult]: At program point L73(line 73) the Hoare annotation is: (let ((.cse0 (<= 0 main_~t~0))) (or (and .cse0 (<= main_~t~0 2) (<= 1 main_~tagbuf_len~0) (< main_~t~0 (+ main_~tagbuf_len~0 1))) (and .cse0 (< main_~t~0 main_~tagbuf_len~0)))) [2020-10-23 18:44:13,278 INFO L270 CegarLoopResult]: At program point L69(line 69) the Hoare annotation is: (and (<= 0 main_~t~0) (< main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,278 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 44) the Hoare annotation is: (and (<= 0 main_~t~0) (< main_~t~0 (+ main_~tagbuf_len~0 1))) [2020-10-23 18:44:13,278 INFO L270 CegarLoopResult]: At program point L32-3(lines 32 44) the Hoare annotation is: (and (<= 0 main_~t~0) (< main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,278 INFO L274 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-10-23 18:44:13,278 INFO L274 CegarLoopResult]: For program point L49(lines 49 53) no Hoare annotation was computed. [2020-10-23 18:44:13,278 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (<= 0 main_~t~0) (< main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,278 INFO L277 CegarLoopResult]: At program point L74(lines 25 77) the Hoare annotation is: true [2020-10-23 18:44:13,279 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 0 main_~t~0) (< main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,279 INFO L270 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= 0 main_~t~0) (< main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,279 INFO L274 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-10-23 18:44:13,281 INFO L274 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-10-23 18:44:13,281 INFO L274 CegarLoopResult]: For program point L33(lines 33 37) no Hoare annotation was computed. [2020-10-23 18:44:13,281 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-23 18:44:13,281 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-10-23 18:44:13,281 INFO L274 CegarLoopResult]: For program point L54(lines 54 68) no Hoare annotation was computed. [2020-10-23 18:44:13,281 INFO L270 CegarLoopResult]: At program point L54-1(lines 54 68) the Hoare annotation is: (and (<= 0 main_~t~0) (< main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,281 INFO L270 CegarLoopResult]: At program point L50(line 50) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,282 INFO L270 CegarLoopResult]: At program point L50-1(line 50) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,282 INFO L274 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-10-23 18:44:13,282 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 77) no Hoare annotation was computed. [2020-10-23 18:44:13,282 INFO L274 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-10-23 18:44:13,282 INFO L274 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-10-23 18:44:13,282 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,282 INFO L270 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (and (<= 0 main_~t~0) (<= main_~t~0 main_~tagbuf_len~0)) [2020-10-23 18:44:13,282 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 77) the Hoare annotation is: true [2020-10-23 18:44:13,283 INFO L274 CegarLoopResult]: For program point L59(lines 59 63) no Hoare annotation was computed. [2020-10-23 18:44:13,283 INFO L274 CegarLoopResult]: For program point L55(lines 55 64) no Hoare annotation was computed. [2020-10-23 18:44:13,283 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-23 18:44:13,283 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 18:44:13,283 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-23 18:44:13,283 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 18:44:13,283 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-23 18:44:13,283 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-23 18:44:13,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:44:13 BoogieIcfgContainer [2020-10-23 18:44:13,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:44:13,310 INFO L168 Benchmark]: Toolchain (without parser) took 10716.22 ms. Allocated memory was 158.3 MB in the beginning and 229.6 MB in the end (delta: 71.3 MB). Free memory was 133.6 MB in the beginning and 202.4 MB in the end (delta: -68.8 MB). Peak memory consumption was 125.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:13,310 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 158.3 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:44:13,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.18 ms. Allocated memory is still 158.3 MB. Free memory was 133.0 MB in the beginning and 123.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:13,312 INFO L168 Benchmark]: Boogie Preprocessor took 88.59 ms. Allocated memory is still 158.3 MB. Free memory was 123.1 MB in the beginning and 121.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:13,313 INFO L168 Benchmark]: RCFGBuilder took 808.06 ms. Allocated memory is still 158.3 MB. Free memory was 121.5 MB in the beginning and 137.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:13,314 INFO L168 Benchmark]: TraceAbstraction took 9436.74 ms. Allocated memory was 158.3 MB in the beginning and 229.6 MB in the end (delta: 71.3 MB). Free memory was 136.9 MB in the beginning and 202.4 MB in the end (delta: -65.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:13,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 158.3 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 365.18 ms. Allocated memory is still 158.3 MB. Free memory was 133.0 MB in the beginning and 123.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.59 ms. Allocated memory is still 158.3 MB. Free memory was 123.1 MB in the beginning and 121.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 808.06 ms. Allocated memory is still 158.3 MB. Free memory was 121.5 MB in the beginning and 137.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9436.74 ms. Allocated memory was 158.3 MB in the beginning and 229.6 MB in the end (delta: 71.3 MB). Free memory was 136.9 MB in the beginning and 202.4 MB in the end (delta: -65.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 32]: Loop Invariant Derived loop invariant: 0 <= t && t < tagbuf_len + 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (0 <= t && 1 <= tagbuf_len) && t < tagbuf_len + 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.1s, OverallIterations: 7, TraceHistogramMax: 8, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 293 SDtfs, 535 SDslu, 625 SDs, 0 SdLazy, 1629 SolverSat, 621 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 292 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 166 PreInvPairs, 228 NumberOfFragments, 199 HoareAnnotationTreeSize, 166 FomulaSimplifications, 1481 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 26 FomulaSimplificationsInter, 1781 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 61317 SizeOfPredicates, 6 NumberOfNonLiveVariables, 435 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 325/348 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...