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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:44:13,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:44:13,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:44:13,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:44:13,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:44:13,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:44:13,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:44:13,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:44:13,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:44:13,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:44:13,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:44:13,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:44:13,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:44:13,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:44:13,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:44:13,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:44:13,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:44:13,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:44:13,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:44:13,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:44:13,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:44:13,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:44:13,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:44:13,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:44:13,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:44:13,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:44:13,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:44:13,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:44:13,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:44:13,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:44:13,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:44:13,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:44:13,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:44:13,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:44:13,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:44:13,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:44:13,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:44:13,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:44:13,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:44:13,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:44:13,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:44:13,287 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 [2019-10-14 23:44:13,320 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:44:13,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:44:13,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:44:13,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:44:13,322 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:44:13,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:44:13,326 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:44:13,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:44:13,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:44:13,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:44:13,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:44:13,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:44:13,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:44:13,327 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:44:13,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:44:13,327 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:44:13,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:44:13,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:44:13,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:44:13,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:44:13,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:44:13,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:44:13,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:44:13,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:44:13,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:44:13,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:44:13,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:44:13,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:44:13,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:44:13,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:44:13,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:44:13,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:44:13,626 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:44:13,627 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:44:13,627 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-10-14 23:44:13,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50853c91/7b5203661eb9419bbf34b1cef40d4741/FLAGc3ff0faba [2019-10-14 23:44:14,401 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:44:14,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-10-14 23:44:14,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50853c91/7b5203661eb9419bbf34b1cef40d4741/FLAGc3ff0faba [2019-10-14 23:44:14,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50853c91/7b5203661eb9419bbf34b1cef40d4741 [2019-10-14 23:44:14,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:44:14,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:44:14,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:14,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:44:14,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:44:14,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:14" (1/1) ... [2019-10-14 23:44:14,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515fa66e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:14, skipping insertion in model container [2019-10-14 23:44:14,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:14" (1/1) ... [2019-10-14 23:44:14,575 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:44:14,737 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:44:15,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:15,774 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:44:16,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:16,188 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:44:16,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:16 WrapperNode [2019-10-14 23:44:16,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:16,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:44:16,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:44:16,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:44:16,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:16" (1/1) ... [2019-10-14 23:44:16,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:16" (1/1) ... [2019-10-14 23:44:16,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:16" (1/1) ... [2019-10-14 23:44:16,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:16" (1/1) ... [2019-10-14 23:44:16,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:16" (1/1) ... [2019-10-14 23:44:16,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:16" (1/1) ... [2019-10-14 23:44:16,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:16" (1/1) ... [2019-10-14 23:44:16,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:44:16,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:44:16,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:44:16,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:44:16,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:16" (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 [2019-10-14 23:44:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:44:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:44:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:44:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:44:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:44:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:44:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-14 23:44:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:44:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:44:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:44:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:44:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:44:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:44:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:44:16,524 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:44:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:44:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:44:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:44:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:44:20,047 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:44:20,048 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:44:20,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:20 BoogieIcfgContainer [2019-10-14 23:44:20,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:44:20,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:44:20,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:44:20,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:44:20,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:14" (1/3) ... [2019-10-14 23:44:20,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459ed7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:20, skipping insertion in model container [2019-10-14 23:44:20,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:16" (2/3) ... [2019-10-14 23:44:20,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459ed7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:20, skipping insertion in model container [2019-10-14 23:44:20,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:20" (3/3) ... [2019-10-14 23:44:20,059 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-10-14 23:44:20,069 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:44:20,078 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-14 23:44:20,090 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-14 23:44:20,134 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:44:20,134 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:44:20,134 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:44:20,134 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:44:20,134 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:44:20,135 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:44:20,135 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:44:20,135 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:44:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states. [2019-10-14 23:44:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-14 23:44:20,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:20,228 INFO L380 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] [2019-10-14 23:44:20,231 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:20,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:20,241 INFO L82 PathProgramCache]: Analyzing trace with hash -261683, now seen corresponding path program 1 times [2019-10-14 23:44:20,256 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:20,256 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388034266] [2019-10-14 23:44:20,257 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:20,257 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:20,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:21,903 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-14 23:44:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:21,965 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388034266] [2019-10-14 23:44:21,966 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:21,967 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:21,967 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579233791] [2019-10-14 23:44:21,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:44:21,973 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:21,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:44:21,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:21,991 INFO L87 Difference]: Start difference. First operand 1259 states. Second operand 6 states. [2019-10-14 23:44:22,726 WARN L191 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-14 23:44:31,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:31,661 INFO L93 Difference]: Finished difference Result 2483 states and 4339 transitions. [2019-10-14 23:44:31,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:44:31,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-14 23:44:31,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:31,698 INFO L225 Difference]: With dead ends: 2483 [2019-10-14 23:44:31,698 INFO L226 Difference]: Without dead ends: 1562 [2019-10-14 23:44:31,708 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:44:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2019-10-14 23:44:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1556. [2019-10-14 23:44:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2019-10-14 23:44:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2098 transitions. [2019-10-14 23:44:31,878 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2098 transitions. Word has length 55 [2019-10-14 23:44:31,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:31,878 INFO L462 AbstractCegarLoop]: Abstraction has 1556 states and 2098 transitions. [2019-10-14 23:44:31,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:44:31,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2098 transitions. [2019-10-14 23:44:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:44:31,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:31,883 INFO L380 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] [2019-10-14 23:44:31,884 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:31,884 INFO L82 PathProgramCache]: Analyzing trace with hash -19234945, now seen corresponding path program 1 times [2019-10-14 23:44:31,885 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:31,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460076790] [2019-10-14 23:44:31,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:31,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:31,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:32,629 WARN L191 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-14 23:44:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:32,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460076790] [2019-10-14 23:44:32,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:32,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:44:32,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041823485] [2019-10-14 23:44:32,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:44:32,670 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:32,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:44:32,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:44:32,671 INFO L87 Difference]: Start difference. First operand 1556 states and 2098 transitions. Second operand 7 states. [2019-10-14 23:44:33,319 WARN L191 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-14 23:44:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:39,353 INFO L93 Difference]: Finished difference Result 3394 states and 4672 transitions. [2019-10-14 23:44:39,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:44:39,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-14 23:44:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:39,371 INFO L225 Difference]: With dead ends: 3394 [2019-10-14 23:44:39,371 INFO L226 Difference]: Without dead ends: 2302 [2019-10-14 23:44:39,375 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:44:39,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2019-10-14 23:44:39,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2286. [2019-10-14 23:44:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2286 states. [2019-10-14 23:44:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 3132 transitions. [2019-10-14 23:44:39,488 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 3132 transitions. Word has length 56 [2019-10-14 23:44:39,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:39,490 INFO L462 AbstractCegarLoop]: Abstraction has 2286 states and 3132 transitions. [2019-10-14 23:44:39,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:44:39,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 3132 transitions. [2019-10-14 23:44:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:44:39,495 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:39,496 INFO L380 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] [2019-10-14 23:44:39,497 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:39,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:39,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1128300978, now seen corresponding path program 1 times [2019-10-14 23:44:39,497 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:39,498 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112832981] [2019-10-14 23:44:39,498 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:39,498 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:39,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:40,165 WARN L191 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-14 23:44:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:40,198 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112832981] [2019-10-14 23:44:40,199 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:40,199 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:44:40,199 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385319196] [2019-10-14 23:44:40,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:44:40,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:40,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:44:40,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:44:40,200 INFO L87 Difference]: Start difference. First operand 2286 states and 3132 transitions. Second operand 7 states. [2019-10-14 23:44:40,813 WARN L191 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-14 23:44:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:46,173 INFO L93 Difference]: Finished difference Result 5902 states and 8156 transitions. [2019-10-14 23:44:46,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:44:46,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-14 23:44:46,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:46,195 INFO L225 Difference]: With dead ends: 5902 [2019-10-14 23:44:46,196 INFO L226 Difference]: Without dead ends: 4341 [2019-10-14 23:44:46,200 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:44:46,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2019-10-14 23:44:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 4321. [2019-10-14 23:44:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4321 states. [2019-10-14 23:44:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 5977 transitions. [2019-10-14 23:44:46,365 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 5977 transitions. Word has length 56 [2019-10-14 23:44:46,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:46,367 INFO L462 AbstractCegarLoop]: Abstraction has 4321 states and 5977 transitions. [2019-10-14 23:44:46,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:44:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 5977 transitions. [2019-10-14 23:44:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:44:46,373 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:46,373 INFO L380 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] [2019-10-14 23:44:46,373 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:46,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1514896090, now seen corresponding path program 1 times [2019-10-14 23:44:46,374 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:46,374 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572852500] [2019-10-14 23:44:46,375 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:46,375 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:46,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:47,200 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-14 23:44:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:47,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572852500] [2019-10-14 23:44:47,276 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:47,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:44:47,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521406003] [2019-10-14 23:44:47,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:44:47,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:47,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:44:47,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:44:47,278 INFO L87 Difference]: Start difference. First operand 4321 states and 5977 transitions. Second operand 10 states. [2019-10-14 23:44:48,022 WARN L191 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 323