/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/eca-rers2012/Problem12_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:11:46,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:11:46,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:11:46,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:11:46,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:11:46,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:11:46,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:11:46,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:11:46,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:11:46,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:11:46,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:11:46,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:11:46,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:11:46,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:11:46,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:11:46,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:11:46,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:11:46,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:11:46,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:11:46,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:11:46,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:11:46,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:11:46,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:11:46,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:11:46,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:11:46,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:11:46,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:11:46,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:11:46,070 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 19:11:46,085 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:11:46,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:11:46,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:11:46,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:11:46,086 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:11:46,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:11:46,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:11:46,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:11:46,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:11:46,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:11:46,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:11:46,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:11:46,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:11:46,088 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:11:46,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:11:46,088 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:11:46,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:11:46,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:11:46,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:11:46,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:11:46,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:11:46,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:11:46,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:11:46,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:11:46,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:11:46,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:11:46,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:11:46,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:11:46,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:11:46,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:11:46,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:11:46,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:11:46,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:11:46,356 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:11:46,357 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2019-11-06 19:11:46,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd3c999d0/85667b4d294b4c9d96c4f89887eda776/FLAG9b1fbe91c [2019-11-06 19:11:47,180 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:11:47,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2019-11-06 19:11:47,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd3c999d0/85667b4d294b4c9d96c4f89887eda776/FLAG9b1fbe91c [2019-11-06 19:11:47,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd3c999d0/85667b4d294b4c9d96c4f89887eda776 [2019-11-06 19:11:47,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:11:47,278 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:11:47,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:11:47,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:11:47,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:11:47,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:47" (1/1) ... [2019-11-06 19:11:47,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e89fa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:47, skipping insertion in model container [2019-11-06 19:11:47,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:47" (1/1) ... [2019-11-06 19:11:47,299 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:11:47,447 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:11:48,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:11:48,962 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:11:49,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:11:49,681 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:11:49,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:49 WrapperNode [2019-11-06 19:11:49,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:11:49,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:11:49,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:11:49,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:11:49,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:49" (1/1) ... [2019-11-06 19:11:49,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:49" (1/1) ... [2019-11-06 19:11:49,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:49" (1/1) ... [2019-11-06 19:11:49,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:49" (1/1) ... [2019-11-06 19:11:49,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:49" (1/1) ... [2019-11-06 19:11:49,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:49" (1/1) ... [2019-11-06 19:11:49,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:49" (1/1) ... [2019-11-06 19:11:49,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:11:49,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:11:49,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:11:49,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:11:49,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:49" (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 19:11:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:11:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:11:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:11:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:11:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:11:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:11:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:11:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:11:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:11:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:11:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:11:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:11:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:11:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:11:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:11:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:11:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:11:55,093 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:11:55,094 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:11:55,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:11:55 BoogieIcfgContainer [2019-11-06 19:11:55,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:11:55,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:11:55,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:11:55,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:11:55,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:11:47" (1/3) ... [2019-11-06 19:11:55,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abd0e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:11:55, skipping insertion in model container [2019-11-06 19:11:55,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:49" (2/3) ... [2019-11-06 19:11:55,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abd0e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:11:55, skipping insertion in model container [2019-11-06 19:11:55,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:11:55" (3/3) ... [2019-11-06 19:11:55,104 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label46.c [2019-11-06 19:11:55,115 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:11:55,124 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:11:55,137 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:11:55,175 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:11:55,176 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:11:55,176 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:11:55,176 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:11:55,176 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:11:55,176 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:11:55,177 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:11:55,177 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:11:55,212 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 19:11:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-06 19:11:55,222 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:11:55,224 INFO L410 BasicCegarLoop]: trace histogram [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, 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] [2019-11-06 19:11:55,226 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:11:55,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:11:55,232 INFO L82 PathProgramCache]: Analyzing trace with hash 415024674, now seen corresponding path program 1 times [2019-11-06 19:11:55,241 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:11:55,242 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631912440] [2019-11-06 19:11:55,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:11:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:11:55,694 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 19:11:55,695 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631912440] [2019-11-06 19:11:55,696 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:11:55,696 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:11:55,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88870211] [2019-11-06 19:11:55,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:11:55,704 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:11:55,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:11:55,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:11:55,722 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2019-11-06 19:12:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:12:08,595 INFO L93 Difference]: Finished difference Result 3269 states and 6302 transitions. [2019-11-06 19:12:08,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:12:08,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2019-11-06 19:12:08,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:12:08,635 INFO L225 Difference]: With dead ends: 3269 [2019-11-06 19:12:08,636 INFO L226 Difference]: Without dead ends: 2346 [2019-11-06 19:12:08,646 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:12:08,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2019-11-06 19:12:08,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2342. [2019-11-06 19:12:08,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2019-11-06 19:12:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3858 transitions. [2019-11-06 19:12:08,833 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3858 transitions. Word has length 67 [2019-11-06 19:12:08,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:12:08,836 INFO L462 AbstractCegarLoop]: Abstraction has 2342 states and 3858 transitions. [2019-11-06 19:12:08,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:12:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3858 transitions. [2019-11-06 19:12:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-06 19:12:08,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:12:08,860 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:12:08,861 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:12:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:12:08,861 INFO L82 PathProgramCache]: Analyzing trace with hash 295469771, now seen corresponding path program 1 times [2019-11-06 19:12:08,862 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:12:08,862 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471522566] [2019-11-06 19:12:08,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:12:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:12:09,347 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471522566] [2019-11-06 19:12:09,347 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:12:09,348 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:12:09,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958243393] [2019-11-06 19:12:09,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:12:09,352 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:12:09,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:12:09,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:12:09,354 INFO L87 Difference]: Start difference. First operand 2342 states and 3858 transitions. Second operand 9 states. [2019-11-06 19:12:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:12:21,683 INFO L93 Difference]: Finished difference Result 9505 states and 16081 transitions. [2019-11-06 19:12:21,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:12:21,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2019-11-06 19:12:21,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:12:21,729 INFO L225 Difference]: With dead ends: 9505 [2019-11-06 19:12:21,730 INFO L226 Difference]: Without dead ends: 7169 [2019-11-06 19:12:21,738 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-06 19:12:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2019-11-06 19:12:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 7153. [2019-11-06 19:12:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7153 states. [2019-11-06 19:12:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 10808 transitions. [2019-11-06 19:12:21,930 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 10808 transitions. Word has length 166 [2019-11-06 19:12:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:12:21,931 INFO L462 AbstractCegarLoop]: Abstraction has 7153 states and 10808 transitions. [2019-11-06 19:12:21,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:12:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 10808 transitions. [2019-11-06 19:12:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-11-06 19:12:21,936 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:12:21,936 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:12:21,937 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:12:21,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:12:21,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1449231638, now seen corresponding path program 1 times [2019-11-06 19:12:21,937 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:12:21,938 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446664457] [2019-11-06 19:12:21,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:12:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 120 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 19:12:22,312 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446664457] [2019-11-06 19:12:22,313 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271346043] [2019-11-06 19:12:22,313 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 19:12:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:12:22,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-06 19:12:22,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:12:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-06 19:12:22,613 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:12:22,614 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-11-06 19:12:22,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638456878] [2019-11-06 19:12:22,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:12:22,615 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:12:22,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:12:22,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:12:22,616 INFO L87 Difference]: Start difference. First operand 7153 states and 10808 transitions. Second operand 5 states.