/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:52:49,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:52:49,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:52:49,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:52:49,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:52:49,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:52:49,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:52:49,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:52:49,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:52:49,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:52:49,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:52:49,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:52:49,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:52:49,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:52:49,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:52:49,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:52:49,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:52:49,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:52:49,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:52:49,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:52:49,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:52:49,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:52:49,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:52:49,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:52:49,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:52:49,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:52:49,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:52:49,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:52:49,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:52:49,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:52:49,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:52:49,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:52:49,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:52:49,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:52:49,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:52:49,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:52:49,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:52:49,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:52:49,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:52:49,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:52:49,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:52:49,272 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 [2020-09-25 06:52:49,297 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:52:49,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:52:49,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:52:49,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:52:49,299 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:52:49,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:52:49,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:52:49,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:52:49,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:52:49,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:52:49,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:52:49,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:52:49,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:52:49,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:52:49,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:52:49,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:52:49,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:52:49,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:52:49,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:52:49,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:52:49,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:52:49,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:52:49,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:52:49,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:52:49,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:52:49,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:52:49,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:52:49,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:52:49,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:52:49,304 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:52:49,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:52:49,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:52:49,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:52:49,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:52:49,894 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:52:49,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-09-25 06:52:49,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f501b9bd/822db3102da24693a9cf61f9354bcc47/FLAG4909259e2 [2020-09-25 06:52:50,537 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:52:50,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-09-25 06:52:50,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f501b9bd/822db3102da24693a9cf61f9354bcc47/FLAG4909259e2 [2020-09-25 06:52:50,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f501b9bd/822db3102da24693a9cf61f9354bcc47 [2020-09-25 06:52:50,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:52:50,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:52:50,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:52:50,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:52:50,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:52:50,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:52:50" (1/1) ... [2020-09-25 06:52:50,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec69499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:50, skipping insertion in model container [2020-09-25 06:52:50,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:52:50" (1/1) ... [2020-09-25 06:52:50,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:52:50,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:52:51,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:52:51,186 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:52:51,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:52:51,219 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:52:51,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:51 WrapperNode [2020-09-25 06:52:51,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:52:51,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:52:51,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:52:51,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:52:51,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:51" (1/1) ... [2020-09-25 06:52:51,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:51" (1/1) ... [2020-09-25 06:52:51,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:51" (1/1) ... [2020-09-25 06:52:51,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:51" (1/1) ... [2020-09-25 06:52:51,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:51" (1/1) ... [2020-09-25 06:52:51,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:51" (1/1) ... [2020-09-25 06:52:51,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:51" (1/1) ... [2020-09-25 06:52:51,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:52:51,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:52:51,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:52:51,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:52:51,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:51" (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 [2020-09-25 06:52:51,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:52:51,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:52:51,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 06:52:51,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:52:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:52:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 06:52:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:52:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:52:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:52:51,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:52:51,628 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:52:51,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:52:51 BoogieIcfgContainer [2020-09-25 06:52:51,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:52:51,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:52:51,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:52:51,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:52:51,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:52:50" (1/3) ... [2020-09-25 06:52:51,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4eb609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:52:51, skipping insertion in model container [2020-09-25 06:52:51,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:52:51" (2/3) ... [2020-09-25 06:52:51,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4eb609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:52:51, skipping insertion in model container [2020-09-25 06:52:51,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:52:51" (3/3) ... [2020-09-25 06:52:51,645 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-09-25 06:52:51,658 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:52:51,669 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:52:51,695 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:52:51,733 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:52:51,734 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:52:51,734 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:52:51,735 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:52:51,735 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:52:51,735 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:52:51,736 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:52:51,736 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:52:51,769 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-25 06:52:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 06:52:51,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:52:51,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:52:51,781 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:52:51,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:52:51,794 INFO L82 PathProgramCache]: Analyzing trace with hash -420526341, now seen corresponding path program 1 times [2020-09-25 06:52:51,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:52:51,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822659946] [2020-09-25 06:52:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:52:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:52,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:52,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:52:52,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:52,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-09-25 06:52:52,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:52,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:52:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:52:52,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:52:52,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:52:53,072 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-09-25 06:52:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:52:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:53,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:53,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:52:53,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:52:53,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:53,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:53,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:52:53,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:52:53,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822659946] [2020-09-25 06:52:53,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:52:53,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 06:52:53,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338565752] [2020-09-25 06:52:53,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:52:53,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:52:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:52:53,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:52:53,165 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 10 states. [2020-09-25 06:52:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:52:53,456 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-09-25 06:52:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:52:53,458 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-25 06:52:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:52:53,471 INFO L225 Difference]: With dead ends: 50 [2020-09-25 06:52:53,471 INFO L226 Difference]: Without dead ends: 29 [2020-09-25 06:52:53,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:52:53,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-25 06:52:53,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-09-25 06:52:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-25 06:52:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-25 06:52:53,535 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 15 [2020-09-25 06:52:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:52:53,536 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-25 06:52:53,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:52:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-25 06:52:53,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 06:52:53,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:52:53,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:52:53,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:52:53,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:52:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:52:53,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1780540834, now seen corresponding path program 1 times [2020-09-25 06:52:53,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:52:53,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753452201] [2020-09-25 06:52:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:52:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:53,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:55,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:55,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:52:55,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:52:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1922 [2020-09-25 06:52:55,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:55,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:52:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:52:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:52:55,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:52:56,162 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 36 [2020-09-25 06:52:56,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:52:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:56,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:56,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:52:56,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:56,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:52:56,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:56,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:52:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:52:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:52:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:56,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:52:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:56,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:52:56,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:52:56,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:52:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:52:56,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:52:56,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:52:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:52:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:52:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:52:56,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:52:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:52:56,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753452201] [2020-09-25 06:52:56,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:52:56,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 06:52:56,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276381255] [2020-09-25 06:52:56,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:52:56,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:52:56,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:52:56,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:52:56,264 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 13 states. [2020-09-25 06:52:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:52:56,451 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-09-25 06:52:56,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:52:56,452 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-09-25 06:52:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:52:56,453 INFO L225 Difference]: With dead ends: 40 [2020-09-25 06:52:56,453 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 06:52:56,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:52:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 06:52:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 06:52:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 06:52:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-09-25 06:52:56,465 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 24 [2020-09-25 06:52:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:52:56,465 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-09-25 06:52:56,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:52:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-09-25 06:52:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:52:56,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:52:56,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:52:56,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:52:56,468 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:52:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:52:56,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1647717669, now seen corresponding path program 2 times [2020-09-25 06:52:56,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:52:56,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054714855] [2020-09-25 06:52:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:52:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:52:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:52:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:01,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:01,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 06:53:01,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:53:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:53:01,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:01,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:53:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:53:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:53:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:08,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:53:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:08,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:53:08,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:53:08,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:08,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:53:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:53:08,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:08,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:53:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:08,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:08,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:08,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:53:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:53:08,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:08,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:53:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:53:08,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:08,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 06:53:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:53:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:53:08,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:53:08,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:53:08,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:53:08,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 06:53:08,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:53:08,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:53:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:53:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:53:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:53:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:53:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 4 refuted. 3 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:53:08,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054714855] [2020-09-25 06:53:08,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:53:08,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:53:08,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448703122] [2020-09-25 06:53:08,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:53:08,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:53:08,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:53:08,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=85, Unknown=3, NotChecked=0, Total=110 [2020-09-25 06:53:08,483 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 11 states. [2020-09-25 06:53:17,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:53:17,830 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-25 06:53:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:53:17,832 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-09-25 06:53:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:53:17,833 INFO L225 Difference]: With dead ends: 36 [2020-09-25 06:53:17,833 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 06:53:17,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=33, Invalid=120, Unknown=3, NotChecked=0, Total=156 [2020-09-25 06:53:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 06:53:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 06:53:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 06:53:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 06:53:17,835 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-09-25 06:53:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:53:17,835 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 06:53:17,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:53:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 06:53:17,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 06:53:17,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:53:17,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 06:53:20,038 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-09-25 06:53:20,416 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-09-25 06:53:20,426 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 06:53:20,426 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 06:53:20,426 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 06:53:20,426 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 06:53:20,427 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 06:53:20,427 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 06:53:20,427 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-25 06:53:20,427 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-09-25 06:53:20,428 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse4 (div (* main_~i~0 2) 4294967296)) (.cse5 (div main_~j~0 4294967296))) (let ((.cse1 (+ (* 4294967296 (div (* main_~i~0 3) 4294967296)) main_~i~0 (* 8589934592 .cse5) main_~k~0)) (.cse0 (+ (* 2 main_~j~0) (* 8589934592 .cse4) (* 4294967296 (div main_~k~0 4294967296)))) (.cse3 (+ (* 2 main_~i~0) (* 4294967296 .cse5))) (.cse2 (+ main_~j~0 (* 4294967296 .cse4)))) (and (<= .cse0 .cse1) (<= .cse2 .cse3) (<= .cse1 .cse0) (<= .cse3 .cse2)))) [2020-09-25 06:53:20,428 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 06:53:20,428 INFO L264 CegarLoopResult]: At program point L23-1(lines 19 24) the Hoare annotation is: (let ((.cse4 (div (* main_~i~0 2) 4294967296)) (.cse5 (div main_~j~0 4294967296))) (let ((.cse1 (+ (* 4294967296 (div (* main_~i~0 3) 4294967296)) main_~i~0 (* 8589934592 .cse5) main_~k~0)) (.cse0 (+ (* 2 main_~j~0) (* 8589934592 .cse4) (* 4294967296 (div main_~k~0 4294967296)))) (.cse3 (+ (* 2 main_~i~0) (* 4294967296 .cse5))) (.cse2 (+ main_~j~0 (* 4294967296 .cse4)))) (and (<= .cse0 .cse1) (<= .cse2 .cse3) (<= .cse1 .cse0) (<= .cse3 .cse2)))) [2020-09-25 06:53:20,428 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 06:53:20,428 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 06:53:20,429 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 06:53:20,429 INFO L268 CegarLoopResult]: For program point L19-2(lines 13 26) no Hoare annotation was computed. [2020-09-25 06:53:20,429 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 06:53:20,429 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true [2020-09-25 06:53:20,429 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 11) no Hoare annotation was computed. [2020-09-25 06:53:20,429 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 06:53:20,430 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 06:53:20,430 INFO L268 CegarLoopResult]: For program point L7-2(lines 5 11) no Hoare annotation was computed. [2020-09-25 06:53:20,430 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 06:53:20,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:53:20 BoogieIcfgContainer [2020-09-25 06:53:20,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:53:20,457 INFO L168 Benchmark]: Toolchain (without parser) took 29570.01 ms. Allocated memory was 146.3 MB in the beginning and 331.9 MB in the end (delta: 185.6 MB). Free memory was 103.0 MB in the beginning and 168.8 MB in the end (delta: -65.8 MB). Peak memory consumption was 119.8 MB. Max. memory is 7.1 GB. [2020-09-25 06:53:20,458 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:53:20,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.97 ms. Allocated memory is still 146.3 MB. Free memory was 102.3 MB in the beginning and 93.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 06:53:20,460 INFO L168 Benchmark]: Boogie Preprocessor took 126.83 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 93.0 MB in the beginning and 182.2 MB in the end (delta: -89.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-25 06:53:20,461 INFO L168 Benchmark]: RCFGBuilder took 285.95 ms. Allocated memory is still 202.4 MB. Free memory was 182.2 MB in the beginning and 170.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-25 06:53:20,462 INFO L168 Benchmark]: TraceAbstraction took 28819.95 ms. Allocated memory was 202.4 MB in the beginning and 331.9 MB in the end (delta: 129.5 MB). Free memory was 169.4 MB in the beginning and 168.8 MB in the end (delta: 675.0 kB). Peak memory consumption was 130.2 MB. Max. memory is 7.1 GB. [2020-09-25 06:53:20,473 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 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.97 ms. Allocated memory is still 146.3 MB. Free memory was 102.3 MB in the beginning and 93.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.83 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 93.0 MB in the beginning and 182.2 MB in the end (delta: -89.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.95 ms. Allocated memory is still 202.4 MB. Free memory was 182.2 MB in the beginning and 170.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28819.95 ms. Allocated memory was 202.4 MB in the beginning and 331.9 MB in the end (delta: 129.5 MB). Free memory was 169.4 MB in the beginning and 168.8 MB in the end (delta: 675.0 kB). Peak memory consumption was 130.2 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: 19]: Loop Invariant Derived loop invariant: ((2 * j + 8589934592 * (i * 2 / 4294967296) + 4294967296 * (k / 4294967296) <= 4294967296 * (i * 3 / 4294967296) + i + 8589934592 * (j / 4294967296) + k && j + 4294967296 * (i * 2 / 4294967296) <= 2 * i + 4294967296 * (j / 4294967296)) && 4294967296 * (i * 3 / 4294967296) + i + 8589934592 * (j / 4294967296) + k <= 2 * j + 8589934592 * (i * 2 / 4294967296) + 4294967296 * (k / 4294967296)) && 2 * i + 4294967296 * (j / 4294967296) <= j + 4294967296 * (i * 2 / 4294967296) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.1s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 35 SDslu, 256 SDs, 0 SdLazy, 304 SolverSat, 7 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=2, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 16 NumberOfFragments, 211 HoareAnnotationTreeSize, 10 FomulaSimplifications, 288 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 150 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 33892 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 18/30 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...