/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:57:17,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:57:17,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:57:17,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:57:17,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:57:17,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:57:17,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:57:18,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:57:18,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:57:18,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:57:18,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:57:18,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:57:18,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:57:18,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:57:18,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:57:18,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:57:18,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:57:18,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:57:18,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:57:18,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:57:18,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:57:18,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:57:18,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:57:18,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:57:18,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:57:18,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:57:18,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:57:18,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:57:18,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:57:18,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:57:18,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:57:18,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:57:18,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:57:18,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:57:18,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:57:18,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:57:18,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:57:18,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:57:18,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:57:18,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:57:18,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:57:18,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:57:18,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:57:18,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:57:18,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:57:18,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:57:18,124 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:57:18,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:57:18,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:57:18,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:57:18,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:57:18,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:57:18,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:57:18,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:57:18,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:57:18,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:57:18,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:57:18,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:57:18,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:57:18,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:57:18,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:57:18,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:57:18,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:57:18,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:57:18,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:57:18,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:57:18,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:57:18,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:57:18,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:57:18,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:57:18,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:57:18,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:57:18,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:57:18,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:57:18,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:57:18,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:57:18,640 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:57:18,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c [2020-09-24 22:57:18,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e022b895/51c0702cdb3e49ffb1ac1c7411b99e67/FLAG529d48c74 [2020-09-24 22:57:19,291 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:57:19,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c [2020-09-24 22:57:19,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e022b895/51c0702cdb3e49ffb1ac1c7411b99e67/FLAG529d48c74 [2020-09-24 22:57:19,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e022b895/51c0702cdb3e49ffb1ac1c7411b99e67 [2020-09-24 22:57:19,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:57:19,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:57:19,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:19,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:57:19,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:57:19,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:19,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97719e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19, skipping insertion in model container [2020-09-24 22:57:19,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:19,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:57:19,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:57:19,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:19,946 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:57:19,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:19,982 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:57:19,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19 WrapperNode [2020-09-24 22:57:19,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:19,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:57:19,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:57:19,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:57:19,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:19,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:20,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:20,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:20,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:20,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:20,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:20,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:57:20,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:57:20,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:57:20,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:57:20,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:57:20,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:57:20,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:57:20,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:57:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:57:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:57:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:57:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:57:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:57:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:57:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:57:20,433 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:57:20,433 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 22:57:20,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:20 BoogieIcfgContainer [2020-09-24 22:57:20,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:57:20,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:57:20,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:57:20,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:57:20,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:57:19" (1/3) ... [2020-09-24 22:57:20,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2ad099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:20, skipping insertion in model container [2020-09-24 22:57:20,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (2/3) ... [2020-09-24 22:57:20,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2ad099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:20, skipping insertion in model container [2020-09-24 22:57:20,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:20" (3/3) ... [2020-09-24 22:57:20,451 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c [2020-09-24 22:57:20,465 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:57:20,476 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:57:20,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:57:20,557 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:57:20,558 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:57:20,558 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:57:20,558 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:57:20,558 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:57:20,558 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:57:20,559 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:57:20,559 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:57:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-24 22:57:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 22:57:20,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:20,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:20,595 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:20,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1436140310, now seen corresponding path program 1 times [2020-09-24 22:57:20,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:20,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084790341] [2020-09-24 22:57:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:20,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:20,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 22:57:20,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:57:20,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-24 22:57:20,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 22:57:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:20,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:57:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:20,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:20,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:20,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:57:20,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:57:20,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:20,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:20,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:20,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084790341] [2020-09-24 22:57:20,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:57:20,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 22:57:20,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382159556] [2020-09-24 22:57:20,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 22:57:20,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:20,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 22:57:20,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 22:57:20,952 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-09-24 22:57:20,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:20,985 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 22:57:20,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 22:57:20,987 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-24 22:57:20,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:20,999 INFO L225 Difference]: With dead ends: 50 [2020-09-24 22:57:21,000 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:57:21,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 22:57:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:57:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 22:57:21,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 22:57:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-09-24 22:57:21,048 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2020-09-24 22:57:21,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:21,049 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-09-24 22:57:21,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 22:57:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-09-24 22:57:21,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-24 22:57:21,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:21,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:21,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:57:21,051 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:21,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:21,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1309792647, now seen corresponding path program 1 times [2020-09-24 22:57:21,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:21,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712688203] [2020-09-24 22:57:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:21,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:21,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:57:21,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:21,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 22:57:21,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:21,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:21,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 22:57:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:57:21,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:21,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:21,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:57:21,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:57:21,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:21,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712688203] [2020-09-24 22:57:21,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:57:21,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:57:21,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734892984] [2020-09-24 22:57:21,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:57:21,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:21,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:57:21,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:57:21,251 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2020-09-24 22:57:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:21,281 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-09-24 22:57:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:57:21,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-24 22:57:21,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:21,283 INFO L225 Difference]: With dead ends: 54 [2020-09-24 22:57:21,284 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 22:57:21,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:57:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 22:57:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2020-09-24 22:57:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 22:57:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-09-24 22:57:21,293 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 14 [2020-09-24 22:57:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:21,294 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-09-24 22:57:21,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:57:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-09-24 22:57:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 22:57:21,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:21,296 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:21,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:57:21,296 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:21,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1704587139, now seen corresponding path program 1 times [2020-09-24 22:57:21,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:21,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231329372] [2020-09-24 22:57:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:21,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:21,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:21,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:57:21,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:21,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-24 22:57:21,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:57:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:57:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:57:21,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:22,158 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 21 [2020-09-24 22:57:22,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:22,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:22,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:22,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:57:22,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:57:22,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:22,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231329372] [2020-09-24 22:57:22,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:57:22,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:57:22,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547570486] [2020-09-24 22:57:22,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:57:22,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:22,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:57:22,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:57:22,340 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2020-09-24 22:57:30,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:30,853 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-09-24 22:57:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:57:30,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-24 22:57:30,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:30,856 INFO L225 Difference]: With dead ends: 74 [2020-09-24 22:57:30,856 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 22:57:30,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:57:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 22:57:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-09-24 22:57:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 22:57:30,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-09-24 22:57:30,872 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 20 [2020-09-24 22:57:30,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:30,873 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-09-24 22:57:30,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:57:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-09-24 22:57:30,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 22:57:30,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:30,875 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:30,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:57:30,876 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:30,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:30,877 INFO L82 PathProgramCache]: Analyzing trace with hash -110349398, now seen corresponding path program 1 times [2020-09-24 22:57:30,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:30,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008649139] [2020-09-24 22:57:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:31,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:31,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 22:57:31,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:31,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-24 22:57:31,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:57:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:57:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:57:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:31,592 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 18 [2020-09-24 22:57:31,773 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 17 [2020-09-24 22:57:31,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:31,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:31,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:31,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:57:31,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:31,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:57:31,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:31,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:31,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008649139] [2020-09-24 22:57:31,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:57:31,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:57:31,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115983150] [2020-09-24 22:57:31,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:57:31,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:31,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:57:31,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:57:31,811 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2020-09-24 22:57:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:34,303 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-09-24 22:57:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:57:34,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-09-24 22:57:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:34,305 INFO L225 Difference]: With dead ends: 75 [2020-09-24 22:57:34,305 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 22:57:34,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:57:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 22:57:34,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 22:57:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 22:57:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 22:57:34,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-24 22:57:34,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:34,307 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 22:57:34,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:57:34,309 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 22:57:34,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 22:57:34,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:57:34,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 22:57:34,450 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 22:57:34,450 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:57:34,450 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:57:34,451 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 22:57:34,451 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 22:57:34,451 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 22:57:34,451 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (= (let ((.cse0 (div main_~x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ main_~x~0 .cse2) 3))) (+ (* .cse0 4294967296) (* .cse1 3) (* (div (+ main_~x~0 .cse2 (* .cse1 (- 3))) 4294967296) 4294967296))))) main_~x~0) [2020-09-24 22:57:34,452 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 33) no Hoare annotation was computed. [2020-09-24 22:57:34,452 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 22:57:34,452 INFO L268 CegarLoopResult]: For program point L23-1(lines 23 26) no Hoare annotation was computed. [2020-09-24 22:57:34,452 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 22:57:34,452 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 22:57:34,452 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 22:57:34,452 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 22:57:34,455 INFO L264 CegarLoopResult]: At program point L23-5(lines 16 29) the Hoare annotation is: (or (= (let ((.cse0 (div main_~x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ main_~x~0 .cse2) 3))) (+ (* .cse0 4294967296) (* .cse1 3) (* (div (+ main_~x~0 .cse2 (* .cse1 (- 3))) 4294967296) 4294967296))))) main_~x~0) (and (<= (div main_~y~0 4294967296) 0) (<= 1 main_~y~0))) [2020-09-24 22:57:34,455 INFO L268 CegarLoopResult]: For program point L17(lines 17 28) no Hoare annotation was computed. [2020-09-24 22:57:34,455 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 33) no Hoare annotation was computed. [2020-09-24 22:57:34,455 INFO L268 CegarLoopResult]: For program point L30(lines 30 31) no Hoare annotation was computed. [2020-09-24 22:57:34,456 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 12 33) the Hoare annotation is: true [2020-09-24 22:57:34,456 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 22:57:34,456 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 22:57:34,456 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 22:57:34,456 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 22:57:34,456 INFO L268 CegarLoopResult]: For program point L20(lines 20 27) no Hoare annotation was computed. [2020-09-24 22:57:34,456 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 22:57:34,457 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 22:57:34,457 INFO L268 CegarLoopResult]: For program point L16-1(lines 16 29) no Hoare annotation was computed. [2020-09-24 22:57:34,457 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 22:57:34,457 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 22:57:34,457 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-24 22:57:34,458 INFO L268 CegarLoopResult]: For program point L16-5(lines 12 33) no Hoare annotation was computed. [2020-09-24 22:57:34,458 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 10) the Hoare annotation is: true [2020-09-24 22:57:34,458 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 10) no Hoare annotation was computed. [2020-09-24 22:57:34,458 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 22:57:34,458 INFO L268 CegarLoopResult]: For program point L7(lines 7 8) no Hoare annotation was computed. [2020-09-24 22:57:34,458 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 10) no Hoare annotation was computed. [2020-09-24 22:57:34,459 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 22:57:34,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:57:34 BoogieIcfgContainer [2020-09-24 22:57:34,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:57:34,502 INFO L168 Benchmark]: Toolchain (without parser) took 14828.86 ms. Allocated memory was 148.9 MB in the beginning and 243.3 MB in the end (delta: 94.4 MB). Free memory was 103.8 MB in the beginning and 183.9 MB in the end (delta: -80.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:34,503 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:57:34,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.82 ms. Allocated memory is still 148.9 MB. Free memory was 103.2 MB in the beginning and 93.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:34,508 INFO L168 Benchmark]: Boogie Preprocessor took 125.54 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 93.7 MB in the beginning and 183.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:34,515 INFO L168 Benchmark]: RCFGBuilder took 329.85 ms. Allocated memory is still 205.0 MB. Free memory was 183.2 MB in the beginning and 170.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:34,516 INFO L168 Benchmark]: TraceAbstraction took 14056.11 ms. Allocated memory was 205.0 MB in the beginning and 243.3 MB in the end (delta: 38.3 MB). Free memory was 169.5 MB in the beginning and 183.9 MB in the end (delta: -14.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:34,525 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.82 ms. Allocated memory is still 148.9 MB. Free memory was 103.2 MB in the beginning and 93.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.54 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 93.7 MB in the beginning and 183.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.85 ms. Allocated memory is still 205.0 MB. Free memory was 183.2 MB in the beginning and 170.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14056.11 ms. Allocated memory was 205.0 MB in the beginning and 243.3 MB in the end (delta: 38.3 MB). Free memory was 169.5 MB in the beginning and 183.9 MB in the end (delta: -14.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x / 4294967296 * 4294967296 + (x + x / 4294967296 * -4294967296) / 3 * 3 + (x + x / 4294967296 * -4294967296 + (x + x / 4294967296 * -4294967296) / 3 * -3) / 4294967296 * 4294967296 == x || (y / 4294967296 <= 0 && 1 <= y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 150 SDtfs, 35 SDslu, 275 SDs, 0 SdLazy, 82 SolverSat, 8 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 97 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 83 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 13477 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...