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.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:45,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:45,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:45,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:45,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:45,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:45,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:45,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:45,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:45,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:45,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:45,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:45,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:45,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:45,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:45,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:45,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:45,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:45,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:45,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:45,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:45,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:45,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:45,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:45,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:45:45,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:45:45,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:45:45,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:45:45,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:45:45,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:45:45,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:45,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:45,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:45,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:45,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:45,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:45,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:45,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:45,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:45,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:45,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:45,959 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 [2019-10-13 19:45:45,988 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:45,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:45,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:45,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:45,994 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:45,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:45,995 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:45,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:45,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:45,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:45,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:45,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:45,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:45,996 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:45,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:45,997 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:45,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:45,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:45,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:45,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:45,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:45,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:45,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:45,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:45,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:45,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:45,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:45,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:45,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:46,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:46,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:46,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:46,281 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:46,281 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:46,282 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-10-13 19:45:46,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319d42c3b/fdbd21c43ecc4aeab6ccda7e54d430e4/FLAGdbdb63c44 [2019-10-13 19:45:47,041 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:47,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-10-13 19:45:47,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319d42c3b/fdbd21c43ecc4aeab6ccda7e54d430e4/FLAGdbdb63c44 [2019-10-13 19:45:47,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/319d42c3b/fdbd21c43ecc4aeab6ccda7e54d430e4 [2019-10-13 19:45:47,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:47,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:47,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:47,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:47,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:47,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:47" (1/1) ... [2019-10-13 19:45:47,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c6ce0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:47, skipping insertion in model container [2019-10-13 19:45:47,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:47" (1/1) ... [2019-10-13 19:45:47,188 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:47,347 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:48,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:48,377 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:48,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:48,729 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:48,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:48 WrapperNode [2019-10-13 19:45:48,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:48,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:48,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:48,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:48,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:48" (1/1) ... [2019-10-13 19:45:48,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:48" (1/1) ... [2019-10-13 19:45:48,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:48" (1/1) ... [2019-10-13 19:45:48,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:48" (1/1) ... [2019-10-13 19:45:48,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:48" (1/1) ... [2019-10-13 19:45:48,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:48" (1/1) ... [2019-10-13 19:45:48,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:48" (1/1) ... [2019-10-13 19:45:49,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:49,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:49,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:49,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:49,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:48" (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 [2019-10-13 19:45:49,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:49,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:49,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:49,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:45:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:52,742 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:52,743 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:52,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:52 BoogieIcfgContainer [2019-10-13 19:45:52,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:52,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:52,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:52,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:52,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:47" (1/3) ... [2019-10-13 19:45:52,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f53b299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:52, skipping insertion in model container [2019-10-13 19:45:52,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:48" (2/3) ... [2019-10-13 19:45:52,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f53b299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:52, skipping insertion in model container [2019-10-13 19:45:52,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:52" (3/3) ... [2019-10-13 19:45:52,761 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-10-13 19:45:52,771 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:52,798 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-13 19:45:52,855 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-13 19:45:52,889 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:52,890 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:52,890 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:52,890 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:52,890 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:52,890 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:52,890 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:52,891 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states. [2019-10-13 19:45:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 19:45:52,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:52,954 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] [2019-10-13 19:45:52,956 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:52,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:52,963 INFO L82 PathProgramCache]: Analyzing trace with hash -261683, now seen corresponding path program 1 times [2019-10-13 19:45:52,972 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:52,972 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176028299] [2019-10-13 19:45:52,972 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:52,972 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:52,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:54,276 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:45:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:54,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176028299] [2019-10-13 19:45:54,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:54,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:54,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61058724] [2019-10-13 19:45:54,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:45:54,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:54,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:45:54,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:54,387 INFO L87 Difference]: Start difference. First operand 1259 states. Second operand 6 states. [2019-10-13 19:45:55,145 WARN L191 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-13 19:46:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:03,846 INFO L93 Difference]: Finished difference Result 2475 states and 4331 transitions. [2019-10-13 19:46:03,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:46:03,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-13 19:46:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:03,880 INFO L225 Difference]: With dead ends: 2475 [2019-10-13 19:46:03,880 INFO L226 Difference]: Without dead ends: 1554 [2019-10-13 19:46:03,889 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:46:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2019-10-13 19:46:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1548. [2019-10-13 19:46:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2019-10-13 19:46:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2090 transitions. [2019-10-13 19:46:04,061 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2090 transitions. Word has length 55 [2019-10-13 19:46:04,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:04,062 INFO L462 AbstractCegarLoop]: Abstraction has 1548 states and 2090 transitions. [2019-10-13 19:46:04,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:46:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2090 transitions. [2019-10-13 19:46:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:46:04,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:04,068 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] [2019-10-13 19:46:04,069 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:04,070 INFO L82 PathProgramCache]: Analyzing trace with hash -19234945, now seen corresponding path program 1 times [2019-10-13 19:46:04,070 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:04,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335882172] [2019-10-13 19:46:04,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:04,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:04,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:04,975 WARN L191 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:46:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:05,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335882172] [2019-10-13 19:46:05,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:05,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:46:05,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209624802] [2019-10-13 19:46:05,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:46:05,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:05,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:46:05,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:46:05,017 INFO L87 Difference]: Start difference. First operand 1548 states and 2090 transitions. Second operand 7 states. [2019-10-13 19:46:05,768 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-13 19:46:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:11,725 INFO L93 Difference]: Finished difference Result 3384 states and 4662 transitions. [2019-10-13 19:46:11,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:46:11,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-13 19:46:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:11,738 INFO L225 Difference]: With dead ends: 3384 [2019-10-13 19:46:11,738 INFO L226 Difference]: Without dead ends: 2296 [2019-10-13 19:46:11,741 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:46:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2019-10-13 19:46:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2280. [2019-10-13 19:46:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2019-10-13 19:46:11,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3126 transitions. [2019-10-13 19:46:11,848 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3126 transitions. Word has length 56 [2019-10-13 19:46:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:11,849 INFO L462 AbstractCegarLoop]: Abstraction has 2280 states and 3126 transitions. [2019-10-13 19:46:11,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:46:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3126 transitions. [2019-10-13 19:46:11,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:46:11,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:11,857 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] [2019-10-13 19:46:11,857 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:11,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1128300978, now seen corresponding path program 1 times [2019-10-13 19:46:11,858 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:11,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858857460] [2019-10-13 19:46:11,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:11,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:11,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:12,647 WARN L191 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:46:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:12,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858857460] [2019-10-13 19:46:12,682 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:12,682 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:46:12,682 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953988679] [2019-10-13 19:46:12,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:46:12,683 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:12,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:46:12,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:46:12,684 INFO L87 Difference]: Start difference. First operand 2280 states and 3126 transitions. Second operand 7 states. [2019-10-13 19:46:13,513 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-13 19:46:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:18,828 INFO L93 Difference]: Finished difference Result 5893 states and 8147 transitions. [2019-10-13 19:46:18,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:46:18,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-13 19:46:18,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:18,849 INFO L225 Difference]: With dead ends: 5893 [2019-10-13 19:46:18,850 INFO L226 Difference]: Without dead ends: 4335 [2019-10-13 19:46:18,854 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:46:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2019-10-13 19:46:19,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 4315. [2019-10-13 19:46:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4315 states. [2019-10-13 19:46:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 5971 transitions. [2019-10-13 19:46:19,035 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 5971 transitions. Word has length 56 [2019-10-13 19:46:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:19,038 INFO L462 AbstractCegarLoop]: Abstraction has 4315 states and 5971 transitions. [2019-10-13 19:46:19,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:46:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 5971 transitions. [2019-10-13 19:46:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:46:19,042 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:19,042 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] [2019-10-13 19:46:19,043 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:19,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1514896090, now seen corresponding path program 1 times [2019-10-13 19:46:19,044 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:19,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576296904] [2019-10-13 19:46:19,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:19,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:19,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:20,051 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:46:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:20,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576296904] [2019-10-13 19:46:20,087 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:20,087 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:46:20,087 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995508130] [2019-10-13 19:46:20,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:46:20,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:20,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:46:20,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:46:20,089 INFO L87 Difference]: Start difference. First operand 4315 states and 5971 transitions. Second operand 10 states. [2019-10-13 19:46:20,847 WARN L191 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 323