/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/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:32:42,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:32:42,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:32:42,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:32:42,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:32:42,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:32:42,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:32:42,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:32:42,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:32:42,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:32:42,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:32:42,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:32:42,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:32:42,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:32:42,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:32:42,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:32:42,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:32:42,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:32:42,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:32:42,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:32:42,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:32:42,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:32:42,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:32:42,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:32:42,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 14:32:42,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:32:42,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:32:42,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:32:42,093 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 14:32:42,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:32:42,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:32:42,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:32:42,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:32:42,110 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:32:42,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:32:42,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:32:42,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:32:42,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:32:42,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:32:42,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:32:42,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:32:42,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:32:42,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:32:42,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:32:42,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:32:42,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:32:42,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:32:42,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:32:42,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:32:42,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:32:42,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:32:42,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:32:42,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:32:42,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:32:42,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:32:42,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:32:42,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:32:42,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:32:42,115 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 14:32:42,397 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:32:42,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:32:42,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:32:42,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:32:42,422 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:32:42,424 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-07-21 14:32:42,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc19b8a08/5be4d2b40c7c4804846cba1524f02057/FLAG28ad4181a [2020-07-21 14:32:42,896 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:32:42,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3.c [2020-07-21 14:32:42,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc19b8a08/5be4d2b40c7c4804846cba1524f02057/FLAG28ad4181a [2020-07-21 14:32:43,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc19b8a08/5be4d2b40c7c4804846cba1524f02057 [2020-07-21 14:32:43,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:32:43,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:32:43,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:32:43,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:32:43,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:32:43,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:32:43" (1/1) ... [2020-07-21 14:32:43,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f41f43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43, skipping insertion in model container [2020-07-21 14:32:43,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:32:43" (1/1) ... [2020-07-21 14:32:43,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:32:43,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:32:43,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:32:43,525 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:32:43,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:32:43,560 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:32:43,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43 WrapperNode [2020-07-21 14:32:43,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:32:43,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:32:43,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:32:43,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:32:43,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43" (1/1) ... [2020-07-21 14:32:43,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43" (1/1) ... [2020-07-21 14:32:43,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43" (1/1) ... [2020-07-21 14:32:43,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43" (1/1) ... [2020-07-21 14:32:43,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43" (1/1) ... [2020-07-21 14:32:43,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43" (1/1) ... [2020-07-21 14:32:43,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43" (1/1) ... [2020-07-21 14:32:43,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:32:43,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:32:43,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:32:43,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:32:43,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43" (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 14:32:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:32:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:32:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 14:32:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:32:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:32:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:32:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 14:32:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 14:32:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 14:32:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:32:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:32:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:32:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:32:43,932 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:32:43,932 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 14:32:43,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:32:43 BoogieIcfgContainer [2020-07-21 14:32:43,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:32:43,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:32:43,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:32:43,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:32:43,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:32:43" (1/3) ... [2020-07-21 14:32:43,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7223d2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:32:43, skipping insertion in model container [2020-07-21 14:32:43,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:32:43" (2/3) ... [2020-07-21 14:32:43,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7223d2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:32:43, skipping insertion in model container [2020-07-21 14:32:43,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:32:43" (3/3) ... [2020-07-21 14:32:43,945 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-07-21 14:32:43,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:32:43,964 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:32:43,980 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:32:44,005 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:32:44,006 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:32:44,006 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:32:44,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:32:44,006 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:32:44,006 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:32:44,007 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:32:44,007 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:32:44,025 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-21 14:32:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 14:32:44,031 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:32:44,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:32:44,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:32:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:32:44,038 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-07-21 14:32:44,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:32:44,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851087622] [2020-07-21 14:32:44,049 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 14:32:44,128 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:32:44,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:32:44,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 14:32:44,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:32:44,195 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 14:32:44,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:32:44,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851087622] [2020-07-21 14:32:44,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:32:44,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 14:32:44,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430902794] [2020-07-21 14:32:44,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 14:32:44,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:32:44,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 14:32:44,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:32:44,234 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-21 14:32:44,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:32:44,273 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-07-21 14:32:44,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 14:32:44,275 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 14:32:44,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:32:44,300 INFO L225 Difference]: With dead ends: 35 [2020-07-21 14:32:44,300 INFO L226 Difference]: Without dead ends: 15 [2020-07-21 14:32:44,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:32:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-21 14:32:44,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-21 14:32:44,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 14:32:44,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-21 14:32:44,353 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-07-21 14:32:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:32:44,354 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-21 14:32:44,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 14:32:44,354 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-21 14:32:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 14:32:44,355 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:32:44,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:32:44,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:32:44,571 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:32:44,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:32:44,572 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-07-21 14:32:44,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:32:44,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54880381] [2020-07-21 14:32:44,574 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 14:32:44,614 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:32:44,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:32:44,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 14:32:44,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:32:44,715 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 14:32:44,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:32:44,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54880381] [2020-07-21 14:32:44,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:32:44,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:32:44,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301827263] [2020-07-21 14:32:44,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:32:44,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:32:44,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:32:44,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:32:44,720 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-21 14:32:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:32:44,793 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-21 14:32:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:32:44,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-21 14:32:44,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:32:44,796 INFO L225 Difference]: With dead ends: 25 [2020-07-21 14:32:44,796 INFO L226 Difference]: Without dead ends: 22 [2020-07-21 14:32:44,797 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 14:32:44,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-21 14:32:44,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-21 14:32:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-21 14:32:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-21 14:32:44,805 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-21 14:32:44,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:32:44,806 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-21 14:32:44,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:32:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-21 14:32:44,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 14:32:44,807 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:32:44,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:32:45,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:32:45,017 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:32:45,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:32:45,018 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-07-21 14:32:45,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:32:45,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077853818] [2020-07-21 14:32:45,020 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 14:32:45,085 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:32:45,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:32:45,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 14:32:45,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:32:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:32:45,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:32:45,230 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:32:53,645 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 14:32:53,645 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:32:55,685 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~x~0 c_main_~z~0))) (or (= (+ .cse0 (* c_main_~y~0 c_main_~z~0 c_main_~z~0 c_main_~a~0)) (+ (* c_main_~z~0 c_main_~a~0) (* c_main_~x~0 c_main_~z~0 c_main_~z~0))) (not (= (+ .cse0 c_main_~a~0) (+ c_main_~x~0 (* c_main_~y~0 c_main_~z~0 c_main_~a~0)))))) is different from true [2020-07-21 14:32:55,700 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 14:32:55,707 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 14:32:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-07-21 14:32:55,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077853818] [2020-07-21 14:32:55,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:32:55,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2020-07-21 14:32:55,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402558863] [2020-07-21 14:32:55,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 14:32:55,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:32:55,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 14:32:55,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=5, NotChecked=18, Total=132 [2020-07-21 14:32:55,899 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 12 states. [2020-07-21 14:33:02,267 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 14:33:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:33:14,836 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-21 14:33:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 14:33:14,837 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-07-21 14:33:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:33:14,838 INFO L225 Difference]: With dead ends: 32 [2020-07-21 14:33:14,839 INFO L226 Difference]: Without dead ends: 28 [2020-07-21 14:33:14,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=44, Invalid=136, Unknown=6, NotChecked=24, Total=210 [2020-07-21 14:33:14,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-21 14:33:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-21 14:33:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 14:33:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-21 14:33:14,847 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2020-07-21 14:33:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:33:14,848 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-21 14:33:14,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 14:33:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-21 14:33:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 14:33:14,849 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:33:14,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:33:15,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:33:15,054 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:33:15,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:33:15,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-07-21 14:33:15,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:33:15,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830674286] [2020-07-21 14:33:15,057 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