/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.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:13:09,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:13:09,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:13:09,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:13:09,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:13:09,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:13:09,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:13:09,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:13:09,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:13:09,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:13:09,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:13:09,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:13:09,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:13:09,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:13:09,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:13:09,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:13:09,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:13:09,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:13:09,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:13:09,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:13:09,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:13:09,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:13:09,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:13:09,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:13:09,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 06:13:09,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 06:13:09,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 06:13:09,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 06:13:09,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 06:13:09,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 06:13:09,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 06:13:09,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 06:13:09,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 06:13:09,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 06:13:09,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 06:13:09,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 06:13:09,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 06:13:09,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 06:13:09,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:13:09,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:13:09,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:13:09,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 06:13:09,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:13:09,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:13:09,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:13:09,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:13:09,657 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:13:09,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:13:09,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:13:09,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:13:09,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:13:09,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:13:09,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:13:09,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:13:09,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:13:09,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:13:09,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:13:09,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:13:09,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:13:09,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:13:09,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:13:09,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:13:09,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:13:09,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:13:09,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:13:09,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:13:09,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:13:09,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:13:09,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:13:09,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:13:09,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:13:09,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 06:13:10,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:13:10,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:13:10,022 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:13:10,024 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:13:10,024 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:13:10,025 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-20 06:13:10,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79274fd71/7e4d0687b42c478399f7cb9b8345de1a/FLAG25ff6bbb1 [2020-07-20 06:13:10,537 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:13:10,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-20 06:13:10,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79274fd71/7e4d0687b42c478399f7cb9b8345de1a/FLAG25ff6bbb1 [2020-07-20 06:13:10,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79274fd71/7e4d0687b42c478399f7cb9b8345de1a [2020-07-20 06:13:10,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:13:10,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:13:10,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:13:10,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:13:11,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:13:11,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:13:10" (1/1) ... [2020-07-20 06:13:11,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e4f62c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11, skipping insertion in model container [2020-07-20 06:13:11,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:13:10" (1/1) ... [2020-07-20 06:13:11,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:13:11,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:13:11,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:13:11,217 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:13:11,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:13:11,253 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:13:11,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11 WrapperNode [2020-07-20 06:13:11,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:13:11,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:13:11,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:13:11,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:13:11,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11" (1/1) ... [2020-07-20 06:13:11,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11" (1/1) ... [2020-07-20 06:13:11,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11" (1/1) ... [2020-07-20 06:13:11,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11" (1/1) ... [2020-07-20 06:13:11,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11" (1/1) ... [2020-07-20 06:13:11,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11" (1/1) ... [2020-07-20 06:13:11,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11" (1/1) ... [2020-07-20 06:13:11,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:13:11,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:13:11,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:13:11,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:13:11,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:13:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:13:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:13:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:13:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:13:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:13:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:13:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:13:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:13:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:13:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:13:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:13:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:13:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:13:11,632 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:13:11,633 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 06:13:11,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:13:11 BoogieIcfgContainer [2020-07-20 06:13:11,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:13:11,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:13:11,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:13:11,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:13:11,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:13:10" (1/3) ... [2020-07-20 06:13:11,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb90fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:13:11, skipping insertion in model container [2020-07-20 06:13:11,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:11" (2/3) ... [2020-07-20 06:13:11,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb90fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:13:11, skipping insertion in model container [2020-07-20 06:13:11,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:13:11" (3/3) ... [2020-07-20 06:13:11,645 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-07-20 06:13:11,656 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:13:11,664 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:13:11,679 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:13:11,704 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:13:11,704 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:13:11,704 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:13:11,704 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:13:11,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:13:11,705 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:13:11,705 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:13:11,705 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:13:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-20 06:13:11,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 06:13:11,731 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:13:11,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:13:11,733 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:13:11,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:13:11,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1923958992, now seen corresponding path program 1 times [2020-07-20 06:13:11,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:13:11,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429043799] [2020-07-20 06:13:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@319cd1be [2020-07-20 06:13:11,832 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:13:11,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957762639] [2020-07-20 06:13:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5009850 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:13:11,894 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5009850 issued 3 check-sat command(s) [2020-07-20 06:13:11,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:13:11,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 06:13:11,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:13:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:13:12,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429043799] [2020-07-20 06:13:12,017 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:13:12,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957762639] [2020-07-20 06:13:12,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:13:12,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:13:12,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197156401] [2020-07-20 06:13:12,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:13:12,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:13:12,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:13:12,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:13:12,047 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-20 06:13:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:13:12,269 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-07-20 06:13:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:13:12,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 06:13:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:13:12,282 INFO L225 Difference]: With dead ends: 45 [2020-07-20 06:13:12,283 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 06:13:12,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:13:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 06:13:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-20 06:13:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 06:13:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-20 06:13:12,332 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-20 06:13:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:13:12,333 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-20 06:13:12,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:13:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-20 06:13:12,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 06:13:12,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:13:12,335 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:13:12,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-20 06:13:12,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:13:12,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:13:12,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1187633082, now seen corresponding path program 1 times [2020-07-20 06:13:12,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:13:12,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717010682] [2020-07-20 06:13:12,546 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@319cd1be [2020-07-20 06:13:12,557 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:13:12,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919921872] [2020-07-20 06:13:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d75220a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:13:12,598 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d75220a issued 4 check-sat command(s) [2020-07-20 06:13:12,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:13:12,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 06:13:12,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:13:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:13:12,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717010682] [2020-07-20 06:13:12,662 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:13:12,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919921872] [2020-07-20 06:13:12,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:13:12,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 06:13:12,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095932064] [2020-07-20 06:13:12,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 06:13:12,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:13:12,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 06:13:12,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:13:12,666 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-07-20 06:13:12,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:13:12,727 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-20 06:13:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:13:12,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 06:13:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:13:12,729 INFO L225 Difference]: With dead ends: 31 [2020-07-20 06:13:12,729 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 06:13:12,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:13:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 06:13:12,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 06:13:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 06:13:12,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-07-20 06:13:12,739 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2020-07-20 06:13:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:13:12,739 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-07-20 06:13:12,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 06:13:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-07-20 06:13:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 06:13:12,740 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:13:12,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:13:12,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:13:12,955 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:13:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:13:12,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1235596592, now seen corresponding path program 1 times [2020-07-20 06:13:12,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:13:12,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19237571] [2020-07-20 06:13:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@319cd1be [2020-07-20 06:13:12,963 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:13:12,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165804322] [2020-07-20 06:13:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@226ed881 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:13:13,003 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@226ed881 issued 4 check-sat command(s) [2020-07-20 06:13:13,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:13:13,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 06:13:13,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:13:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:13:13,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19237571] [2020-07-20 06:13:13,112 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:13:13,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165804322] [2020-07-20 06:13:13,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:13:13,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-20 06:13:13,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138849649] [2020-07-20 06:13:13,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 06:13:13,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:13:13,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 06:13:13,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:13:13,116 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2020-07-20 06:13:13,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:13:13,217 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-07-20 06:13:13,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:13:13,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 06:13:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:13:13,220 INFO L225 Difference]: With dead ends: 33 [2020-07-20 06:13:13,221 INFO L226 Difference]: Without dead ends: 31 [2020-07-20 06:13:13,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:13:13,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-20 06:13:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-07-20 06:13:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 06:13:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-20 06:13:13,238 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-07-20 06:13:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:13:13,239 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-20 06:13:13,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 06:13:13,240 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-20 06:13:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 06:13:13,242 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:13:13,242 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:13:13,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:13:13,458 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:13:13,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:13:13,459 INFO L82 PathProgramCache]: Analyzing trace with hash -725804614, now seen corresponding path program 1 times [2020-07-20 06:13:13,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:13:13,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71362817] [2020-07-20 06:13:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@319cd1be [2020-07-20 06:13:13,470 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:13:13,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451824572] [2020-07-20 06:13:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62efda95 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:13:13,522 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62efda95 issued 4 check-sat command(s) [2020-07-20 06:13:13,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:13:13,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 06:13:13,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:13:19,729 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 06:13:19,799 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 06:13:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 06:13:19,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71362817] [2020-07-20 06:13:19,865 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:13:19,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451824572] [2020-07-20 06:13:19,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:13:19,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-20 06:13:19,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124620433] [2020-07-20 06:13:19,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 06:13:19,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:13:19,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 06:13:19,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=71, Unknown=1, NotChecked=0, Total=90 [2020-07-20 06:13:19,868 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 10 states. [2020-07-20 06:13:28,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:13:28,398 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-20 06:13:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 06:13:28,399 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-07-20 06:13:28,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:13:28,400 INFO L225 Difference]: With dead ends: 32 [2020-07-20 06:13:28,400 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 06:13:28,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=35, Invalid=120, Unknown=1, NotChecked=0, Total=156 [2020-07-20 06:13:28,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 06:13:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 06:13:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 06:13:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 06:13:28,406 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-20 06:13:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:13:28,406 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 06:13:28,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 06:13:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 06:13:28,407 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 06:13:28,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:13:28,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 06:13:28,665 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 06:13:28,665 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:13:28,666 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:13:28,666 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 06:13:28,666 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 06:13:28,666 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 06:13:28,667 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 10 12) no Hoare annotation was computed. [2020-07-20 06:13:28,667 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-20 06:13:28,667 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2020-07-20 06:13:28,668 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2020-07-20 06:13:28,668 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-07-20 06:13:28,668 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 40) no Hoare annotation was computed. [2020-07-20 06:13:28,668 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 46) the Hoare annotation is: true [2020-07-20 06:13:28,668 INFO L271 CegarLoopResult]: At program point L30-2(lines 30 40) the Hoare annotation is: true [2020-07-20 06:13:28,668 INFO L268 CegarLoopResult]: For program point L30-3(lines 30 40) no Hoare annotation was computed. [2020-07-20 06:13:28,669 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2020-07-20 06:13:28,669 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2020-07-20 06:13:28,669 INFO L271 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: true [2020-07-20 06:13:28,669 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-20 06:13:28,669 INFO L268 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-07-20 06:13:28,669 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2020-07-20 06:13:28,669 INFO L268 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-07-20 06:13:28,670 INFO L268 CegarLoopResult]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2020-07-20 06:13:28,670 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2020-07-20 06:13:28,670 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-20 06:13:28,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:13:28 BoogieIcfgContainer [2020-07-20 06:13:28,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:13:28,692 INFO L168 Benchmark]: Toolchain (without parser) took 17692.32 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 101.7 MB in the beginning and 170.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-07-20 06:13:28,694 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 06:13:28,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.13 ms. Allocated memory is still 137.4 MB. Free memory was 101.3 MB in the beginning and 91.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:13:28,702 INFO L168 Benchmark]: Boogie Preprocessor took 114.46 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 91.4 MB in the beginning and 180.1 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-20 06:13:28,703 INFO L168 Benchmark]: RCFGBuilder took 266.94 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 167.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-07-20 06:13:28,704 INFO L168 Benchmark]: TraceAbstraction took 17049.11 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 167.1 MB in the beginning and 170.9 MB in the end (delta: -3.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-07-20 06:13:28,717 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.13 ms. Allocated memory is still 137.4 MB. Free memory was 101.3 MB in the beginning and 91.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.46 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 91.4 MB in the beginning and 180.1 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.94 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 167.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17049.11 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 167.1 MB in the beginning and 170.9 MB in the end (delta: -3.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 33 SDslu, 218 SDs, 0 SdLazy, 148 SolverSat, 7 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 8 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 68 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 64 ConstructedInterpolants, 1 QuantifiedInterpolants, 4911 SizeOfPredicates, 11 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 11/17 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...