/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 NUM_VARIABLES --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 01:55:15,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:55:15,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:55:15,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:55:15,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:55:15,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:55:15,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:55:15,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:55:15,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:55:15,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:55:15,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:55:15,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:55:15,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:55:15,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:55:15,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:55:15,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:55:15,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:55:15,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:55:15,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:55:15,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:55:15,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:55:15,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:55:15,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:55:15,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:55:15,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 01:55:15,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 01:55:15,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 01:55:15,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 01:55:15,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 01:55:15,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 01:55:15,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 01:55:15,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 01:55:15,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 01:55:15,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 01:55:15,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 01:55:15,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 01:55:15,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 01:55:15,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 01:55:15,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:55:15,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:55:15,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:55:15,528 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 01:55:15,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:55:15,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:55:15,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:55:15,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:55:15,562 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:55:15,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:55:15,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:55:15,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:55:15,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:55:15,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:55:15,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:55:15,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:55:15,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:55:15,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:55:15,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:55:15,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:55:15,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:55:15,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:55:15,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:55:15,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:55:15,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:55:15,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:55:15,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:55:15,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:55:15,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:55:15,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:55:15,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:55:15,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:55:15,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:55:15,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 01:55:15,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:55:15,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:55:15,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:55:15,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:55:15,963 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:55:15,964 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-20 01:55:16,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e962bb2a/291d125e5cf2406288b6de931ccb158b/FLAG782267750 [2020-07-20 01:55:16,508 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:55:16,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-20 01:55:16,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e962bb2a/291d125e5cf2406288b6de931ccb158b/FLAG782267750 [2020-07-20 01:55:16,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e962bb2a/291d125e5cf2406288b6de931ccb158b [2020-07-20 01:55:16,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:55:16,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:55:16,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:55:16,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:55:16,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:55:16,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:55:16" (1/1) ... [2020-07-20 01:55:16,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bf7ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:16, skipping insertion in model container [2020-07-20 01:55:16,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:55:16" (1/1) ... [2020-07-20 01:55:16,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:55:16,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:55:17,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:55:17,090 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:55:17,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:55:17,126 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:55:17,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:17 WrapperNode [2020-07-20 01:55:17,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:55:17,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:55:17,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:55:17,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:55:17,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:17" (1/1) ... [2020-07-20 01:55:17,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:17" (1/1) ... [2020-07-20 01:55:17,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:17" (1/1) ... [2020-07-20 01:55:17,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:17" (1/1) ... [2020-07-20 01:55:17,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:17" (1/1) ... [2020-07-20 01:55:17,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:17" (1/1) ... [2020-07-20 01:55:17,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:17" (1/1) ... [2020-07-20 01:55:17,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:55:17,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:55:17,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:55:17,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:55:17,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:17" (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 01:55:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:55:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:55:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:55:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:55:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:55:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:55:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:55:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:55:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:55:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:55:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:55:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:55:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:55:17,515 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:55:17,515 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 01:55:17,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:55:17 BoogieIcfgContainer [2020-07-20 01:55:17,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:55:17,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:55:17,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:55:17,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:55:17,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:55:16" (1/3) ... [2020-07-20 01:55:17,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a5fce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:55:17, skipping insertion in model container [2020-07-20 01:55:17,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:17" (2/3) ... [2020-07-20 01:55:17,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a5fce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:55:17, skipping insertion in model container [2020-07-20 01:55:17,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:55:17" (3/3) ... [2020-07-20 01:55:17,529 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-07-20 01:55:17,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:55:17,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:55:17,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:55:17,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:55:17,587 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:55:17,587 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:55:17,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:55:17,587 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:55:17,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:55:17,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:55:17,587 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:55:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-20 01:55:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 01:55:17,610 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:55:17,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:55:17,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:55:17,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:55:17,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1923958992, now seen corresponding path program 1 times [2020-07-20 01:55:17,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:55:17,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379763348] [2020-07-20 01:55:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c0df6cc [2020-07-20 01:55:17,707 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:55:17,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32653266] [2020-07-20 01:55:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d3b2896 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 01:55:17,764 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d3b2896 issued 3 check-sat command(s) [2020-07-20 01:55:17,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:55:17,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 01:55:17,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:55:17,888 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 01:55:17,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379763348] [2020-07-20 01:55:17,889 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:55:17,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32653266] [2020-07-20 01:55:17,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:55:17,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:55:17,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226716930] [2020-07-20 01:55:17,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:55:17,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:55:17,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:55:17,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:55:17,916 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-20 01:55:18,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:55:18,021 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-07-20 01:55:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:55:18,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 01:55:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:55:18,035 INFO L225 Difference]: With dead ends: 45 [2020-07-20 01:55:18,035 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 01:55:18,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:55:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 01:55:18,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-20 01:55:18,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 01:55:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-20 01:55:18,088 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-20 01:55:18,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:55:18,089 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-20 01:55:18,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:55:18,089 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-20 01:55:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 01:55:18,090 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:55:18,090 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:55:18,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-20 01:55:18,298 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:55:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:55:18,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1187633082, now seen corresponding path program 1 times [2020-07-20 01:55:18,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:55:18,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586430615] [2020-07-20 01:55:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c0df6cc [2020-07-20 01:55:18,309 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:55:18,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165348185] [2020-07-20 01:55:18,310 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1ac314b3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:55:18,347 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1ac314b3 issued 4 check-sat command(s) [2020-07-20 01:55:18,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:55:18,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 01:55:18,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:55:18,452 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 01:55:18,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586430615] [2020-07-20 01:55:18,453 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:55:18,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165348185] [2020-07-20 01:55:18,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:55:18,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 01:55:18,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884839782] [2020-07-20 01:55:18,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 01:55:18,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:55:18,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 01:55:18,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:55:18,460 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-07-20 01:55:18,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:55:18,544 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-20 01:55:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:55:18,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 01:55:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:55:18,546 INFO L225 Difference]: With dead ends: 31 [2020-07-20 01:55:18,546 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 01:55:18,548 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 01:55:18,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 01:55:18,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 01:55:18,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 01:55:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-07-20 01:55:18,555 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2020-07-20 01:55:18,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:55:18,556 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-07-20 01:55:18,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 01:55:18,556 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-07-20 01:55:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 01:55:18,557 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:55:18,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:55:18,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:55:18,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:55:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:55:18,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1235596592, now seen corresponding path program 1 times [2020-07-20 01:55:18,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:55:18,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636651923] [2020-07-20 01:55:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c0df6cc [2020-07-20 01:55:18,782 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:55:18,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440358212] [2020-07-20 01:55:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5fd4d289 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 01:55:18,831 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5fd4d289 issued 4 check-sat command(s) [2020-07-20 01:55:18,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:55:18,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 01:55:18,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:55:18,960 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 01:55:18,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636651923] [2020-07-20 01:55:18,961 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:55:18,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440358212] [2020-07-20 01:55:18,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:55:18,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-20 01:55:18,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547648479] [2020-07-20 01:55:18,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 01:55:18,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:55:18,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 01:55:18,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:55:18,964 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2020-07-20 01:55:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:55:19,062 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-07-20 01:55:19,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:55:19,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 01:55:19,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:55:19,067 INFO L225 Difference]: With dead ends: 33 [2020-07-20 01:55:19,068 INFO L226 Difference]: Without dead ends: 31 [2020-07-20 01:55:19,069 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 01:55:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-20 01:55:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-07-20 01:55:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 01:55:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-20 01:55:19,077 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-07-20 01:55:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:55:19,078 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-20 01:55:19,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 01:55:19,078 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-20 01:55:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 01:55:19,079 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:55:19,079 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 01:55:19,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:55:19,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:55:19,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:55:19,296 INFO L82 PathProgramCache]: Analyzing trace with hash -725804614, now seen corresponding path program 1 times [2020-07-20 01:55:19,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:55:19,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778137981] [2020-07-20 01:55:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c0df6cc [2020-07-20 01:55:19,306 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:55:19,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290267102] [2020-07-20 01:55:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2a8b09e9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:55:19,346 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2a8b09e9 issued 4 check-sat command(s) [2020-07-20 01:55:19,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:55:19,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 01:55:19,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:55:25,538 WARN L193 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 01:55:25,609 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:55:25,692 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 01:55:25,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778137981] [2020-07-20 01:55:25,693 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:55:25,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290267102] [2020-07-20 01:55:25,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:55:25,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-20 01:55:25,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547433555] [2020-07-20 01:55:25,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 01:55:25,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:55:25,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 01:55:25,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=71, Unknown=1, NotChecked=0, Total=90 [2020-07-20 01:55:25,696 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 10 states. [2020-07-20 01:55:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:55:34,070 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-20 01:55:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 01:55:34,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-07-20 01:55:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:55:34,074 INFO L225 Difference]: With dead ends: 32 [2020-07-20 01:55:34,074 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:55:34,077 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 01:55:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:55:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:55:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:55:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:55:34,080 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-20 01:55:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:55:34,081 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:55:34,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 01:55:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:55:34,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:55:34,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:55:34,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:55:34,327 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 01:55:34,328 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:55:34,328 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:55:34,328 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:55:34,328 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:55:34,328 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:55:34,329 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 10 12) no Hoare annotation was computed. [2020-07-20 01:55:34,329 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-20 01:55:34,329 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2020-07-20 01:55:34,329 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2020-07-20 01:55:34,330 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-07-20 01:55:34,330 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 40) no Hoare annotation was computed. [2020-07-20 01:55:34,331 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 46) the Hoare annotation is: true [2020-07-20 01:55:34,331 INFO L271 CegarLoopResult]: At program point L30-2(lines 30 40) the Hoare annotation is: true [2020-07-20 01:55:34,331 INFO L268 CegarLoopResult]: For program point L30-3(lines 30 40) no Hoare annotation was computed. [2020-07-20 01:55:34,331 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2020-07-20 01:55:34,331 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2020-07-20 01:55:34,331 INFO L271 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: true [2020-07-20 01:55:34,332 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-20 01:55:34,332 INFO L268 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-07-20 01:55:34,332 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2020-07-20 01:55:34,332 INFO L268 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-07-20 01:55:34,333 INFO L268 CegarLoopResult]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2020-07-20 01:55:34,333 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2020-07-20 01:55:34,334 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-20 01:55:34,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:55:34 BoogieIcfgContainer [2020-07-20 01:55:34,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:55:34,351 INFO L168 Benchmark]: Toolchain (without parser) took 17485.39 ms. Allocated memory was 136.3 MB in the beginning and 229.6 MB in the end (delta: 93.3 MB). Free memory was 101.1 MB in the beginning and 167.8 MB in the end (delta: -66.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:55:34,352 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 01:55:34,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.97 ms. Allocated memory is still 136.3 MB. Free memory was 100.7 MB in the beginning and 91.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:55:34,354 INFO L168 Benchmark]: Boogie Preprocessor took 114.11 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 179.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:55:34,355 INFO L168 Benchmark]: RCFGBuilder took 278.73 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 166.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:55:34,356 INFO L168 Benchmark]: TraceAbstraction took 16827.04 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 165.8 MB in the beginning and 167.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:55:34,360 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.97 ms. Allocated memory is still 136.3 MB. Free memory was 100.7 MB in the beginning and 91.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.11 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 179.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 278.73 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 166.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16827.04 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 165.8 MB in the beginning and 167.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 27.4 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: 16.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 8.7s, 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, 8.3s 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, 0.1s SatisfiabilityAnalysisTime, 6.7s 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...