/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:47:45,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:47:45,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:47:45,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:47:45,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:47:45,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:47:45,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:47:45,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:47:45,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:47:45,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:47:45,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:47:45,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:47:45,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:47:45,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:47:45,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:47:45,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:47:45,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:47:45,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:47:45,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:47:45,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:47:45,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:47:45,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:47:45,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:47:45,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:47:45,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:47:45,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:47:45,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:47:45,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:47:45,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:47:45,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:47:45,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:47:45,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:47:45,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:47:45,561 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:47:45,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:47:45,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:47:45,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:47:45,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:47:45,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:47:45,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:47:45,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:47:45,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:47:45,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:47:45,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:47:45,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:47:45,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:47:45,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:47:45,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:47:45,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:47:45,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:47:45,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:47:45,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:47:45,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:47:45,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:47:45,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:47:45,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:47:45,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:47:45,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:47:45,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:47:45,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:47:45,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:47:45,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:47:45,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:47:45,986 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:47:45,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2.c [2020-11-06 22:47:46,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61120e641/8d15aa8e377e49c6a91bb37679c3e944/FLAG696c7b943 [2020-11-06 22:47:46,740 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:47:46,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2.c [2020-11-06 22:47:46,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61120e641/8d15aa8e377e49c6a91bb37679c3e944/FLAG696c7b943 [2020-11-06 22:47:47,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61120e641/8d15aa8e377e49c6a91bb37679c3e944 [2020-11-06 22:47:47,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:47:47,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:47:47,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:47:47,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:47:47,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:47:47,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:47" (1/1) ... [2020-11-06 22:47:47,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da0ac62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47, skipping insertion in model container [2020-11-06 22:47:47,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:47" (1/1) ... [2020-11-06 22:47:47,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:47:47,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:47:47,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:47:47,348 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:47:47,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:47:47,387 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:47:47,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47 WrapperNode [2020-11-06 22:47:47,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:47:47,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:47:47,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:47:47,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:47:47,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47" (1/1) ... [2020-11-06 22:47:47,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47" (1/1) ... [2020-11-06 22:47:47,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47" (1/1) ... [2020-11-06 22:47:47,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47" (1/1) ... [2020-11-06 22:47:47,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47" (1/1) ... [2020-11-06 22:47:47,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47" (1/1) ... [2020-11-06 22:47:47,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47" (1/1) ... [2020-11-06 22:47:47,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:47:47,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:47:47,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:47:47,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:47:47,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47" (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 [2020-11-06 22:47:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:47:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:47:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:47:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:47:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:47:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:47:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:47:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:47:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:47:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:47:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:47:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:47:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:47:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:47:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:47:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:47:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:47:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:47:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:47:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:47:47,909 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:47:47,909 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:47:47,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:47 BoogieIcfgContainer [2020-11-06 22:47:47,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:47:47,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:47:47,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:47:47,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:47:47,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:47:47" (1/3) ... [2020-11-06 22:47:47,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e8f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:47, skipping insertion in model container [2020-11-06 22:47:47,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:47" (2/3) ... [2020-11-06 22:47:47,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e8f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:47, skipping insertion in model container [2020-11-06 22:47:47,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:47" (3/3) ... [2020-11-06 22:47:47,933 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2.c [2020-11-06 22:47:47,952 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:47:47,956 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:47:47,970 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:47:48,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:47:48,009 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:47:48,010 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:47:48,010 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:47:48,010 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:47:48,010 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:47:48,010 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:47:48,011 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:47:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-06 22:47:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 22:47:48,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:48,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:47:48,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash 619537921, now seen corresponding path program 1 times [2020-11-06 22:47:48,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:48,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359969070] [2020-11-06 22:47:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:48,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:47:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:48,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359969070] [2020-11-06 22:47:48,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:47:48,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:47:48,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723750212] [2020-11-06 22:47:48,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:47:48,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:48,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:47:48,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:47:48,362 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-11-06 22:47:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:48,474 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-11-06 22:47:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:47:48,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-06 22:47:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:48,486 INFO L225 Difference]: With dead ends: 40 [2020-11-06 22:47:48,486 INFO L226 Difference]: Without dead ends: 17 [2020-11-06 22:47:48,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:47:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-06 22:47:48,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-06 22:47:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-06 22:47:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-06 22:47:48,536 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2020-11-06 22:47:48,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:48,537 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-06 22:47:48,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:47:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-06 22:47:48,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 22:47:48,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:48,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:47:48,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:47:48,539 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:48,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:48,540 INFO L82 PathProgramCache]: Analyzing trace with hash 674949181, now seen corresponding path program 1 times [2020-11-06 22:47:48,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:48,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184940986] [2020-11-06 22:47:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:48,560 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:47:48,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402777781] [2020-11-06 22:47:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:48,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-06 22:47:48,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:48,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184940986] [2020-11-06 22:47:48,818 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:47:48,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402777781] [2020-11-06 22:47:48,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:47:48,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:47:48,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589111348] [2020-11-06 22:47:48,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:47:48,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:48,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:47:48,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:47:48,823 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-11-06 22:47:48,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:48,914 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-11-06 22:47:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:47:48,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-06 22:47:48,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:48,919 INFO L225 Difference]: With dead ends: 28 [2020-11-06 22:47:48,920 INFO L226 Difference]: Without dead ends: 24 [2020-11-06 22:47:48,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:47:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-06 22:47:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-06 22:47:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-06 22:47:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-11-06 22:47:48,956 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2020-11-06 22:47:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:48,957 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-11-06 22:47:48,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:47:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-11-06 22:47:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:47:48,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:48,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:47:49,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:47:49,164 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:49,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:49,166 INFO L82 PathProgramCache]: Analyzing trace with hash -722961082, now seen corresponding path program 1 times [2020-11-06 22:47:49,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:49,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838154586] [2020-11-06 22:47:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:49,210 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:47:49,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617762097] [2020-11-06 22:47:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:49,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-06 22:47:49,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:49,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838154586] [2020-11-06 22:47:49,407 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:47:49,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617762097] [2020-11-06 22:47:49,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:47:49,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-06 22:47:49,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685138377] [2020-11-06 22:47:49,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:47:49,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:49,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:47:49,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:47:49,410 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 6 states. [2020-11-06 22:47:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:51,595 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-11-06 22:47:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:47:51,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-06 22:47:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:51,598 INFO L225 Difference]: With dead ends: 35 [2020-11-06 22:47:51,598 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 22:47:51,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:47:51,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 22:47:51,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-11-06 22:47:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-06 22:47:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-06 22:47:51,624 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 19 [2020-11-06 22:47:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:51,624 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-06 22:47:51,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:47:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-06 22:47:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:47:51,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:51,626 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:47:51,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:51,832 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:51,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:51,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1590312265, now seen corresponding path program 1 times [2020-11-06 22:47:51,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:51,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053085219] [2020-11-06 22:47:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:51,849 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:47:51,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828766347] [2020-11-06 22:47:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:51,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-06 22:47:51,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:52,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:47:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-06 22:47:52,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053085219] [2020-11-06 22:47:52,080 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:47:52,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828766347] [2020-11-06 22:47:52,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:47:52,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-06 22:47:52,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791491057] [2020-11-06 22:47:52,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:47:52,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:52,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:47:52,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:47:52,083 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2020-11-06 22:47:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:54,268 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-11-06 22:47:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:47:54,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-06 22:47:54,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:54,277 INFO L225 Difference]: With dead ends: 37 [2020-11-06 22:47:54,278 INFO L226 Difference]: Without dead ends: 29 [2020-11-06 22:47:54,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:47:54,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-06 22:47:54,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-06 22:47:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 22:47:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-06 22:47:54,298 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 25 [2020-11-06 22:47:54,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:54,299 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-06 22:47:54,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:47:54,300 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-06 22:47:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 22:47:54,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:54,301 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:47:54,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:54,503 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:54,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1314661347, now seen corresponding path program 2 times [2020-11-06 22:47:54,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:54,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647739436] [2020-11-06 22:47:54,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:54,526 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:47:54,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872212372] [2020-11-06 22:47:54,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:54,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:47:54,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:47:54,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-06 22:47:54,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:54,866 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-11-06 22:47:57,095 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:47:59,197 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:48:22,405 WARN L194 SmtUtils]: Spent 10.41 s on a formula simplification that was a NOOP. DAG size: 29 [2020-11-06 22:48:22,414 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:48:43,752 WARN L194 SmtUtils]: Spent 12.80 s on a formula simplification that was a NOOP. DAG size: 29 [2020-11-06 22:48:45,793 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:48:54,057 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_BEFORE_CALL_5 Int) (v_main_~z~0_BEFORE_CALL_5 Int)) (let ((.cse0 (+ v_main_~x~0_BEFORE_CALL_5 (- 1)))) (and (not (= v_main_~z~0_BEFORE_CALL_5 0)) (not (= (+ (* v_main_~x~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5) 1) (+ (* v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5) v_main_~x~0_BEFORE_CALL_5))) (= (mod .cse0 v_main_~z~0_BEFORE_CALL_5) 0) (let ((.cse1 (div .cse0 v_main_~z~0_BEFORE_CALL_5))) (= (+ .cse1 (* v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5)) (+ (* .cse1 v_main_~z~0_BEFORE_CALL_5) 1)))))) is different from false [2020-11-06 22:48:56,093 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_BEFORE_CALL_5 Int) (v_main_~z~0_BEFORE_CALL_5 Int)) (let ((.cse0 (+ v_main_~x~0_BEFORE_CALL_5 (- 1)))) (and (not (= v_main_~z~0_BEFORE_CALL_5 0)) (not (= (+ (* v_main_~x~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5) 1) (+ (* v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5) v_main_~x~0_BEFORE_CALL_5))) (= (mod .cse0 v_main_~z~0_BEFORE_CALL_5) 0) (let ((.cse1 (div .cse0 v_main_~z~0_BEFORE_CALL_5))) (= (+ .cse1 (* v_main_~z~0_BEFORE_CALL_5 v_main_~z~0_BEFORE_CALL_5)) (+ (* .cse1 v_main_~z~0_BEFORE_CALL_5) 1)))))) is different from true [2020-11-06 22:49:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:49:00,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647739436] [2020-11-06 22:49:00,206 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:49:00,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872212372] [2020-11-06 22:49:00,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:49:00,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-06 22:49:00,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607573456] [2020-11-06 22:49:00,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:49:00,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:49:00,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:49:00,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=71, Unknown=3, NotChecked=16, Total=110 [2020-11-06 22:49:00,209 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 11 states. [2020-11-06 22:49:52,117 WARN L194 SmtUtils]: Spent 33.87 s on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-06 22:50:03,612 WARN L194 SmtUtils]: Spent 6.67 s on a formula simplification. DAG size of input: 38 DAG size of output: 6 [2020-11-06 22:50:07,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:50:07,611 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-11-06 22:50:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 22:50:07,617 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-11-06 22:50:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:50:07,619 INFO L225 Difference]: With dead ends: 40 [2020-11-06 22:50:07,619 INFO L226 Difference]: Without dead ends: 37 [2020-11-06 22:50:07,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 83.8s TimeCoverageRelationStatistics Valid=37, Invalid=117, Unknown=6, NotChecked=22, Total=182 [2020-11-06 22:50:07,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-06 22:50:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-06 22:50:07,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-06 22:50:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-06 22:50:07,636 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 26 [2020-11-06 22:50:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:50:07,636 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-06 22:50:07,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:50:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-06 22:50:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-06 22:50:07,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:50:07,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:50:07,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:50:07,841 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:50:07,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:50:07,843 INFO L82 PathProgramCache]: Analyzing trace with hash 153054566, now seen corresponding path program 3 times [2020-11-06 22:50:07,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:50:07,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824560653] [2020-11-06 22:50:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:50:07,858 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:50:07,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55445548] [2020-11-06 22:50:07,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:50:07,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-06 22:50:07,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:50:07,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-06 22:50:07,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:50:08,245 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-06 22:50:13,392 WARN L194 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-11-06 22:50:13,398 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:50:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-06 22:50:14,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824560653] [2020-11-06 22:50:14,810 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:50:14,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55445548] [2020-11-06 22:50:14,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:50:14,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-06 22:50:14,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673720580] [2020-11-06 22:50:14,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:50:14,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:50:14,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:50:14,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=42, Unknown=1, NotChecked=0, Total=56 [2020-11-06 22:50:14,813 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 8 states. [2020-11-06 22:50:52,553 WARN L194 SmtUtils]: Spent 26.53 s on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-11-06 22:50:52,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:50:52,901 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-11-06 22:50:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:50:52,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-11-06 22:50:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:50:52,905 INFO L225 Difference]: With dead ends: 36 [2020-11-06 22:50:52,905 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:50:52,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=34, Invalid=95, Unknown=3, NotChecked=0, Total=132 [2020-11-06 22:50:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:50:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:50:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:50:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:50:52,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-11-06 22:50:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:50:52,908 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:50:52,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:50:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:50:52,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:50:53,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-06 22:50:53,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:51:01,681 WARN L194 SmtUtils]: Spent 8.24 s on a formula simplification. DAG size of input: 58 DAG size of output: 28 [2020-11-06 22:51:04,745 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:222) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:59) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:67) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeCFGHoareAnnotation(BasicCegarLoop.java:1052) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 36 more [2020-11-06 22:51:04,754 INFO L168 Benchmark]: Toolchain (without parser) took 197628.14 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.2 MB in the beginning and 84.9 MB in the end (delta: 42.3 MB). Peak memory consumption was 73.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:51:04,755 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:51:04,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:51:04,757 INFO L168 Benchmark]: Boogie Preprocessor took 38.32 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 115.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:51:04,758 INFO L168 Benchmark]: RCFGBuilder took 484.01 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 101.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:51:04,760 INFO L168 Benchmark]: TraceAbstraction took 196828.44 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 134.8 MB in the beginning and 84.9 MB in the end (delta: 49.9 MB). Peak memory consumption was 79.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:51:04,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.32 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 115.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 484.01 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 101.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 196828.44 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 134.8 MB in the beginning and 84.9 MB in the end (delta: 49.9 MB). Peak memory consumption was 79.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...