/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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-d623d84 [2020-07-21 14:32:29,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:32:29,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:32:29,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:32:29,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:32:29,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:32:29,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:32:29,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:32:29,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:32:29,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:32:29,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:32:29,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:32:29,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:32:29,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:32:29,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:32:29,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:32:29,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:32:29,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:32:29,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:32:29,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:32:29,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:32:29,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:32:29,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:32:29,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:32:29,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 14:32:29,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 14:32:29,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 14:32:29,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 14:32:29,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 14:32:29,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 14:32:29,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 14:32:29,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 14:32:29,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 14:32:29,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 14:32:29,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 14:32:29,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 14:32:29,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 14:32:29,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 14:32:29,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:32:29,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:32:29,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:32:29,490 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 [2020-07-21 14:32:29,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:32:29,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:32:29,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:32:29,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:32:29,530 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:32:29,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:32:29,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:32:29,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:32:29,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:32:29,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:32:29,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:32:29,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:32:29,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:32:29,536 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:32:29,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:32:29,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:32:29,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:32:29,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:32:29,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:32:29,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:32:29,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:32:29,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:32:29,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:32:29,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:32:29,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:32:29,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:32:29,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:32:29,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:32:29,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:32:29,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 -> 2 [2020-07-21 14:32:29,826 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:32:29,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:32:29,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:32:29,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:32:29,848 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:32:29,849 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-21 14:32:29,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e6bb9a9/08d69bcbe3b54c2698b3bd29e39ce11c/FLAG3680c52b9 [2020-07-21 14:32:30,434 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:32:30,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-21 14:32:30,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e6bb9a9/08d69bcbe3b54c2698b3bd29e39ce11c/FLAG3680c52b9 [2020-07-21 14:32:30,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e6bb9a9/08d69bcbe3b54c2698b3bd29e39ce11c [2020-07-21 14:32:30,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:32:30,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:32:30,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:32:30,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:32:30,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:32:30,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:32:30" (1/1) ... [2020-07-21 14:32:30,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f84d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:30, skipping insertion in model container [2020-07-21 14:32:30,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:32:30" (1/1) ... [2020-07-21 14:32:30,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:32:30,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:32:30,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:32:31,000 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:32:31,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:32:31,042 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:32:31,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:31 WrapperNode [2020-07-21 14:32:31,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:32:31,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:32:31,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:32:31,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:32:31,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:31" (1/1) ... [2020-07-21 14:32:31,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:31" (1/1) ... [2020-07-21 14:32:31,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:31" (1/1) ... [2020-07-21 14:32:31,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:31" (1/1) ... [2020-07-21 14:32:31,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:31" (1/1) ... [2020-07-21 14:32:31,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:31" (1/1) ... [2020-07-21 14:32:31,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:31" (1/1) ... [2020-07-21 14:32:31,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:32:31,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:32:31,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:32:31,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:32:31,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:31" (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 [2020-07-21 14:32:31,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:32:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:32:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 14:32:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:32:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:32:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:32:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 14:32:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 14:32:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 14:32:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:32:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:32:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:32:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:32:31,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:32:31,421 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 14:32:31,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:32:31 BoogieIcfgContainer [2020-07-21 14:32:31,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:32:31,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:32:31,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:32:31,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:32:31,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:32:30" (1/3) ... [2020-07-21 14:32:31,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9294b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:32:31, skipping insertion in model container [2020-07-21 14:32:31,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:31" (2/3) ... [2020-07-21 14:32:31,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9294b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:32:31, skipping insertion in model container [2020-07-21 14:32:31,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:32:31" (3/3) ... [2020-07-21 14:32:31,435 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-07-21 14:32:31,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:32:31,455 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:32:31,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:32:31,550 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:32:31,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:32:31,551 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:32:31,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:32:31,551 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:32:31,551 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:32:31,551 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:32:31,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:32:31,578 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-21 14:32:31,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 14:32:31,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:32:31,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:32:31,585 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:32:31,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:32:31,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1923958992, now seen corresponding path program 1 times [2020-07-21 14:32:31,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:32:31,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705947388] [2020-07-21 14:32:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:32:31,667 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:32:31,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:32:31,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 14:32:31,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:32:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:32:31,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:32:31,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705947388] [2020-07-21 14:32:31,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:32:31,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:32:31,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727386440] [2020-07-21 14:32:31,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:32:31,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:32:31,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:32:31,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:32:31,787 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-21 14:32:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:32:31,880 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-07-21 14:32:31,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:32:31,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-21 14:32:31,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:32:31,892 INFO L225 Difference]: With dead ends: 45 [2020-07-21 14:32:31,892 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 14:32:31,896 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 [2020-07-21 14:32:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 14:32:31,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-21 14:32:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-21 14:32:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-21 14:32:31,946 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-21 14:32:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:32:31,947 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-21 14:32:31,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:32:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-21 14:32:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 14:32:31,948 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:32:31,949 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:32:32,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:32:32,164 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:32:32,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:32:32,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1187633082, now seen corresponding path program 1 times [2020-07-21 14:32:32,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:32:32,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122018013] [2020-07-21 14:32:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:32:32,200 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:32:32,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:32:32,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 14:32:32,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:32:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:32:32,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:32:32,340 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:32:32,417 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 14:32:32,418 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:32:32,436 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:32:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:32:32,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122018013] [2020-07-21 14:32:32,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:32:32,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-07-21 14:32:32,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537836079] [2020-07-21 14:32:32,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 14:32:32,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:32:32,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 14:32:32,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-21 14:32:32,480 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 10 states. [2020-07-21 14:32:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:32:36,672 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-07-21 14:32:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 14:32:36,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-07-21 14:32:36,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:32:36,704 INFO L225 Difference]: With dead ends: 30 [2020-07-21 14:32:36,704 INFO L226 Difference]: Without dead ends: 21 [2020-07-21 14:32:36,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-21 14:32:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-21 14:32:36,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-07-21 14:32:36,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-21 14:32:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-07-21 14:32:36,712 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2020-07-21 14:32:36,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:32:36,712 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-07-21 14:32:36,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 14:32:36,713 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-21 14:32:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 14:32:36,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:32:36,714 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:32:36,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:32:36,930 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:32:36,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:32:36,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1235596592, now seen corresponding path program 1 times [2020-07-21 14:32:36,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:32:36,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833423081] [2020-07-21 14:32:36,932 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:32:36,968 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:32:36,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:32:36,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 14:32:36,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:32:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:32:37,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:32:37,078 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:32:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:32:43,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833423081] [2020-07-21 14:32:43,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:32:43,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-21 14:32:43,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648171676] [2020-07-21 14:32:43,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 14:32:43,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:32:43,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 14:32:43,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=38, Unknown=3, NotChecked=0, Total=56 [2020-07-21 14:32:43,317 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2020-07-21 14:32:51,675 WARN L193 SmtUtils]: Spent 4.15 s on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 14:32:59,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:32:59,964 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-07-21 14:32:59,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 14:32:59,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-07-21 14:32:59,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:32:59,966 INFO L225 Difference]: With dead ends: 30 [2020-07-21 14:32:59,967 INFO L226 Difference]: Without dead ends: 28 [2020-07-21 14:32:59,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=23, Invalid=63, Unknown=4, NotChecked=0, Total=90 [2020-07-21 14:32:59,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-21 14:32:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-21 14:32:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 14:32:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-21 14:32:59,976 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2020-07-21 14:32:59,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:32:59,976 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-21 14:32:59,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 14:32:59,977 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-21 14:32:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 14:32:59,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:32:59,978 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:33:00,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:33:00,183 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:33:00,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:33:00,184 INFO L82 PathProgramCache]: Analyzing trace with hash -677841104, now seen corresponding path program 2 times [2020-07-21 14:33:00,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:33:00,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373436308] [2020-07-21 14:33:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:33:00,231 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:33:00,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:33:00,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 14:33:00,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:33:08,492 WARN L193 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 14:33:08,986 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-21 14:33:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 14:33:09,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:33:09,100 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:33:21,940 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 14:33:21,940 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:33:23,990 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~x~0 c_main_~z~0))) (or (= (+ (* c_main_~y~0 c_main_~z~0) .cse0) (+ c_main_~z~0 (* c_main_~x~0 c_main_~z~0 c_main_~z~0))) (not (= (+ c_main_~y~0 c_main_~x~0) (+ .cse0 1))))) is different from true [2020-07-21 14:33:23,995 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 14:33:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2020-07-21 14:33:24,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373436308] [2020-07-21 14:33:24,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:33:24,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2020-07-21 14:33:24,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194274251] [2020-07-21 14:33:24,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 14:33:24,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:33:24,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 14:33:24,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=119, Unknown=8, NotChecked=22, Total=182 [2020-07-21 14:33:24,122 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2020-07-21 14:33:46,815 WARN L193 SmtUtils]: Spent 15.75 s on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2020-07-21 14:34:12,859 WARN L193 SmtUtils]: Spent 23.36 s on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2020-07-21 14:34:27,205 WARN L193 SmtUtils]: Spent 6.89 s on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-07-21 14:34:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:34:29,138 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-21 14:34:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 14:34:29,138 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2020-07-21 14:34:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:34:29,139 INFO L225 Difference]: With dead ends: 31 [2020-07-21 14:34:29,139 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 14:34:29,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 77.7s TimeCoverageRelationStatistics Valid=58, Invalid=207, Unknown=11, NotChecked=30, Total=306 [2020-07-21 14:34:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 14:34:29,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 14:34:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 14:34:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 14:34:29,141 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-21 14:34:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:34:29,142 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 14:34:29,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 14:34:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 14:34:29,142 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 14:34:29,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:34:29,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 14:34:34,995 WARN L193 SmtUtils]: Spent 5.57 s on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2020-07-21 14:34:43,027 WARN L193 SmtUtils]: Spent 8.03 s on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2020-07-21 14:34:43,030 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 14:34:43,030 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:34:43,030 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:34:43,030 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 14:34:43,031 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:34:43,031 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:34:43,031 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 10 12) no Hoare annotation was computed. [2020-07-21 14:34:43,031 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-21 14:34:43,031 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2020-07-21 14:34:43,032 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2020-07-21 14:34:43,032 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (* main_~x~0 main_~z~0))) (and (= (+ (* main_~y~0 main_~z~0) .cse0) (+ (* main_~x~0 main_~z~0 main_~z~0) main_~z~0)) (= (+ .cse0 1) (+ main_~x~0 main_~y~0)))) [2020-07-21 14:34:43,032 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 40) no Hoare annotation was computed. [2020-07-21 14:34:43,032 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 46) the Hoare annotation is: true [2020-07-21 14:34:43,032 INFO L264 CegarLoopResult]: At program point L30-2(lines 30 40) the Hoare annotation is: (let ((.cse0 (* main_~x~0 main_~z~0))) (and (= (+ (* main_~y~0 main_~z~0) .cse0) (+ (* main_~x~0 main_~z~0 main_~z~0) main_~z~0)) (= (+ .cse0 1) (+ main_~x~0 main_~y~0)))) [2020-07-21 14:34:43,033 INFO L268 CegarLoopResult]: For program point L30-3(lines 30 40) no Hoare annotation was computed. [2020-07-21 14:34:43,033 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2020-07-21 14:34:43,033 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2020-07-21 14:34:43,033 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= main_~y~0 (+ main_~x~0 1)) [2020-07-21 14:34:43,033 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-21 14:34:43,034 INFO L268 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-07-21 14:34:43,034 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2020-07-21 14:34:43,034 INFO L268 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-07-21 14:34:43,034 INFO L268 CegarLoopResult]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2020-07-21 14:34:43,034 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2020-07-21 14:34:43,034 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-21 14:34:43,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:34:43 BoogieIcfgContainer [2020-07-21 14:34:43,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 14:34:43,054 INFO L168 Benchmark]: Toolchain (without parser) took 132288.27 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 101.7 MB in the beginning and 107.8 MB in the end (delta: -6.1 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. [2020-07-21 14:34:43,055 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 14:34:43,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.27 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 91.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-21 14:34:43,057 INFO L168 Benchmark]: Boogie Preprocessor took 112.78 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 91.7 MB in the beginning and 182.1 MB in the end (delta: -90.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-21 14:34:43,058 INFO L168 Benchmark]: RCFGBuilder took 269.94 ms. Allocated memory is still 202.9 MB. Free memory was 182.1 MB in the beginning and 169.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-07-21 14:34:43,059 INFO L168 Benchmark]: TraceAbstraction took 131624.64 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 169.0 MB in the beginning and 107.8 MB in the end (delta: 61.3 MB). Peak memory consumption was 92.7 MB. Max. memory is 7.1 GB. [2020-07-21 14:34:43,063 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.27 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 91.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.78 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 91.7 MB in the beginning and 182.1 MB in the end (delta: -90.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 269.94 ms. Allocated memory is still 202.9 MB. Free memory was 182.1 MB in the beginning and 169.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 131624.64 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 169.0 MB in the beginning and 107.8 MB in the end (delta: 61.3 MB). Peak memory consumption was 92.7 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: y * z + x * z == x * z * z + z && x * z + 1 == x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 117.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 86.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 13.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 39 SDslu, 246 SDs, 0 SdLazy, 158 SolverSat, 25 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 25.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 86 SyntacticMatches, 13 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 90.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 23 NumberOfFragments, 58 HoareAnnotationTreeSize, 14 FomulaSimplifications, 162 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 13.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 30.6s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 9548 SizeOfPredicates, 12 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 25/42 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...