/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/array-fpi/eqn5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:03,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:03,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:03,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:03,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:03,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:03,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:03,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:03,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:03,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:03,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:03,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:03,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:03,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:03,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:03,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:03,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:03,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:03,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:03,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:03,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:03,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:03,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:03,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:03,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:03,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:03,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:03,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:03,347 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 22:44:03,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:03,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:03,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:03,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:03,378 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:03,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:03,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:03,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:03,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:03,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:03,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:03,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:03,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:03,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:03,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:03,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:03,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:03,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:03,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:03,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:03,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:03,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:03,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:03,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:03,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:03,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:03,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:03,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:03,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:03,384 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:03,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:03,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:03,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:03,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:03,857 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:03,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn5f.c [2020-11-06 22:44:03,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87a3cf6aa/d476c338ba0045beac59b69d98043512/FLAGda5bdb696 [2020-11-06 22:44:04,572 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:04,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn5f.c [2020-11-06 22:44:04,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87a3cf6aa/d476c338ba0045beac59b69d98043512/FLAGda5bdb696 [2020-11-06 22:44:04,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87a3cf6aa/d476c338ba0045beac59b69d98043512 [2020-11-06 22:44:04,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:04,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:04,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:04,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:04,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:04,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4548f804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04, skipping insertion in model container [2020-11-06 22:44:04,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:04,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:05,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:05,195 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:05,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:05,235 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:05,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:05 WrapperNode [2020-11-06 22:44:05,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:05,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:05,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:05,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:05,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:05" (1/1) ... [2020-11-06 22:44:05,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:05" (1/1) ... [2020-11-06 22:44:05,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:05" (1/1) ... [2020-11-06 22:44:05,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:05" (1/1) ... [2020-11-06 22:44:05,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:05" (1/1) ... [2020-11-06 22:44:05,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:05" (1/1) ... [2020-11-06 22:44:05,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:05" (1/1) ... [2020-11-06 22:44:05,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:05,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:05,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:05,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:05,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:05" (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 22:44:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:05,943 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:05,944 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-06 22:44:05,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:05 BoogieIcfgContainer [2020-11-06 22:44:05,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:05,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:05,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:05,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:05,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:04" (1/3) ... [2020-11-06 22:44:05,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290d76d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:05, skipping insertion in model container [2020-11-06 22:44:05,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:05" (2/3) ... [2020-11-06 22:44:05,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290d76d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:05, skipping insertion in model container [2020-11-06 22:44:05,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:05" (3/3) ... [2020-11-06 22:44:05,963 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn5f.c [2020-11-06 22:44:05,983 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:05,988 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:06,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:06,053 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:06,053 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:06,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:06,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:06,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:06,054 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:06,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:06,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-06 22:44:06,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:44:06,087 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:06,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:06,088 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:06,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:06,108 INFO L82 PathProgramCache]: Analyzing trace with hash -391571351, now seen corresponding path program 1 times [2020-11-06 22:44:06,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:06,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29590746] [2020-11-06 22:44:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:06,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:06,430 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 22:44:06,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29590746] [2020-11-06 22:44:06,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:06,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:06,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201210516] [2020-11-06 22:44:06,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:06,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:06,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:06,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:06,459 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-11-06 22:44:06,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:06,597 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2020-11-06 22:44:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:06,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-06 22:44:06,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:06,608 INFO L225 Difference]: With dead ends: 63 [2020-11-06 22:44:06,608 INFO L226 Difference]: Without dead ends: 30 [2020-11-06 22:44:06,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 22:44:06,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-06 22:44:06,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-06 22:44:06,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-06 22:44:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-11-06 22:44:06,658 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2020-11-06 22:44:06,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:06,658 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-11-06 22:44:06,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-06 22:44:06,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:44:06,660 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:06,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:06,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:06,661 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:06,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:06,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1402688601, now seen corresponding path program 1 times [2020-11-06 22:44:06,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:06,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024763] [2020-11-06 22:44:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:06,724 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:06,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965617999] [2020-11-06 22:44:06,725 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 22:44:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:06,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-06 22:44:06,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:06,950 INFO L348 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-11-06 22:44:06,951 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2020-11-06 22:44:06,953 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:06,961 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:06,969 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-06 22:44:06,970 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:15 [2020-11-06 22:44:07,030 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:07,031 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-11-06 22:44:07,035 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-06 22:44:07,050 INFO L625 ElimStorePlain]: treesize reduction 9, result has 43.8 percent of original size [2020-11-06 22:44:07,051 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:44:07,051 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-11-06 22:44:07,095 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 22:44:07,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024763] [2020-11-06 22:44:07,096 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:44:07,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965617999] [2020-11-06 22:44:07,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:07,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:44:07,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270521877] [2020-11-06 22:44:07,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:44:07,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:07,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:44:07,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:44:07,100 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 7 states. [2020-11-06 22:44:07,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:07,271 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-11-06 22:44:07,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:44:07,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-06 22:44:07,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:07,275 INFO L225 Difference]: With dead ends: 49 [2020-11-06 22:44:07,275 INFO L226 Difference]: Without dead ends: 46 [2020-11-06 22:44:07,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:44:07,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-06 22:44:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-06 22:44:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-06 22:44:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-06 22:44:07,292 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 23 [2020-11-06 22:44:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:07,293 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-06 22:44:07,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:44:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-06 22:44:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:44:07,294 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:07,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:07,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:44:07,509 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:07,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:07,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1243411255, now seen corresponding path program 1 times [2020-11-06 22:44:07,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:07,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525050629] [2020-11-06 22:44:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:07,550 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:07,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239955172] [2020-11-06 22:44:07,551 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 22:44:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:07,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:44:07,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:07,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525050629] [2020-11-06 22:44:07,658 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:44:07,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239955172] [2020-11-06 22:44:07,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:07,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:07,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978634788] [2020-11-06 22:44:07,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:07,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:07,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:07,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:07,661 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2020-11-06 22:44:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:07,787 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-11-06 22:44:07,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:07,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-06 22:44:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:07,802 INFO L225 Difference]: With dead ends: 74 [2020-11-06 22:44:07,802 INFO L226 Difference]: Without dead ends: 60 [2020-11-06 22:44:07,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:44:07,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-06 22:44:07,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 40. [2020-11-06 22:44:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-06 22:44:07,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-11-06 22:44:07,818 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 25 [2020-11-06 22:44:07,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:07,819 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-11-06 22:44:07,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-11-06 22:44:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:44:07,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:07,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:08,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:08,036 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:08,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1651516553, now seen corresponding path program 1 times [2020-11-06 22:44:08,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:08,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677217008] [2020-11-06 22:44:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:08,060 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:08,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719387741] [2020-11-06 22:44:08,061 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 22:44:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:08,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:44:08,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:08,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:08,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677217008] [2020-11-06 22:44:08,165 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:44:08,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719387741] [2020-11-06 22:44:08,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:44:08,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-06 22:44:08,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292163764] [2020-11-06 22:44:08,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:08,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:08,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:08,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:08,167 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 5 states. [2020-11-06 22:44:08,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:08,263 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-11-06 22:44:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:44:08,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-06 22:44:08,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:08,266 INFO L225 Difference]: With dead ends: 69 [2020-11-06 22:44:08,266 INFO L226 Difference]: Without dead ends: 57 [2020-11-06 22:44:08,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:44:08,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-06 22:44:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2020-11-06 22:44:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-06 22:44:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-11-06 22:44:08,277 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 25 [2020-11-06 22:44:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:08,277 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-11-06 22:44:08,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-11-06 22:44:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 22:44:08,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:08,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:08,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:08,495 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:08,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:08,497 INFO L82 PathProgramCache]: Analyzing trace with hash 385078571, now seen corresponding path program 1 times [2020-11-06 22:44:08,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:08,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442880250] [2020-11-06 22:44:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:08,516 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:08,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323730357] [2020-11-06 22:44:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 22:44:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:08,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-06 22:44:08,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:08,614 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-06 22:44:08,616 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:08,625 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:08,633 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-11-06 22:44:08,634 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:08,645 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:08,646 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:44:08,646 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:19 [2020-11-06 22:44:08,730 INFO L348 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2020-11-06 22:44:08,731 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 72 [2020-11-06 22:44:08,733 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:08,775 INFO L625 ElimStorePlain]: treesize reduction 27, result has 64.5 percent of original size [2020-11-06 22:44:08,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:08,789 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-06 22:44:08,790 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:49 [2020-11-06 22:44:08,791 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:08,818 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:08,852 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:08,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:08,956 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-11-06 22:44:08,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:09,015 INFO L443 ElimStorePlain]: Different costs {12=[|v_#memory_int_15|], 20=[v_prenex_2]} [2020-11-06 22:44:09,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:09,033 INFO L348 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-11-06 22:44:09,034 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 43 [2020-11-06 22:44:09,039 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:09,093 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:09,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:09,129 INFO L348 Elim1Store]: treesize reduction 17, result has 60.5 percent of original size [2020-11-06 22:44:09,130 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 85 [2020-11-06 22:44:09,132 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:09,247 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-11-06 22:44:09,248 INFO L625 ElimStorePlain]: treesize reduction 50, result has 72.2 percent of original size [2020-11-06 22:44:09,259 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2020-11-06 22:44:09,260 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:115, output treesize:130 [2020-11-06 22:44:12,175 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 49 [2020-11-06 22:44:14,379 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 53 [2020-11-06 22:44:14,388 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:14,435 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:44:14,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:14,437 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:44:14,467 INFO L348 Elim1Store]: treesize reduction 17, result has 60.5 percent of original size [2020-11-06 22:44:14,468 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 47 [2020-11-06 22:44:14,470 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-11-06 22:44:14,471 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:14,473 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:14,525 INFO L348 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2020-11-06 22:44:14,526 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 44 [2020-11-06 22:44:14,529 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-11-06 22:44:14,572 INFO L625 ElimStorePlain]: treesize reduction 27, result has 48.1 percent of original size [2020-11-06 22:44:14,578 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-06 22:44:14,578 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:150, output treesize:17 [2020-11-06 22:44:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:14,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442880250] [2020-11-06 22:44:14,714 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:44:14,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323730357] [2020-11-06 22:44:14,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:44:14,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-06 22:44:14,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184881668] [2020-11-06 22:44:14,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:44:14,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:14,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:44:14,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=70, Unknown=1, NotChecked=0, Total=90 [2020-11-06 22:44:14,718 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 10 states. [2020-11-06 22:44:26,292 WARN L194 SmtUtils]: Spent 4.27 s on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-11-06 22:44:33,446 WARN L194 SmtUtils]: Spent 6.97 s on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-11-06 22:44:37,984 WARN L194 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-11-06 22:44:42,401 WARN L194 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-11-06 22:44:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:52,354 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2020-11-06 22:44:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-06 22:44:52,359 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-11-06 22:44:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:52,360 INFO L225 Difference]: With dead ends: 71 [2020-11-06 22:44:52,360 INFO L226 Difference]: Without dead ends: 68 [2020-11-06 22:44:52,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=47, Invalid=162, Unknown=1, NotChecked=0, Total=210 [2020-11-06 22:44:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-06 22:44:52,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2020-11-06 22:44:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-06 22:44:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-11-06 22:44:52,381 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 27 [2020-11-06 22:44:52,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:52,382 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-11-06 22:44:52,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:44:52,382 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-11-06 22:44:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 22:44:52,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:52,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:52,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:52,586 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:52,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:52,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1186077363, now seen corresponding path program 2 times [2020-11-06 22:44:52,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:52,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661923285] [2020-11-06 22:44:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:52,625 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:52,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949646906] [2020-11-06 22:44:52,626 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 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 22:44:52,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:44:52,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:44:52,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:44:52,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:52,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661923285] [2020-11-06 22:44:52,778 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:44:52,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949646906] [2020-11-06 22:44:52,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:44:52,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-06 22:44:52,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836060991] [2020-11-06 22:44:52,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:44:52,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:52,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:44:52,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:44:52,780 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 7 states. [2020-11-06 22:44:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:53,164 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-11-06 22:44:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:44:53,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-11-06 22:44:53,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:53,167 INFO L225 Difference]: With dead ends: 87 [2020-11-06 22:44:53,167 INFO L226 Difference]: Without dead ends: 73 [2020-11-06 22:44:53,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:44:53,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-06 22:44:53,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2020-11-06 22:44:53,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-06 22:44:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-11-06 22:44:53,191 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 29 [2020-11-06 22:44:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:53,194 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-11-06 22:44:53,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:44:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-11-06 22:44:53,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 22:44:53,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:53,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:53,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-06 22:44:53,418 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:53,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1995705613, now seen corresponding path program 3 times [2020-11-06 22:44:53,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:53,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216930269] [2020-11-06 22:44:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:53,457 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:53,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378359] [2020-11-06 22:44:53,457 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:53,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-06 22:44:53,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:44:53,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:44:53,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:53,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216930269] [2020-11-06 22:44:53,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:44:53,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378359] [2020-11-06 22:44:53,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:44:53,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-06 22:44:53,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652888948] [2020-11-06 22:44:53,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:44:53,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:53,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:44:53,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:44:53,619 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 7 states. [2020-11-06 22:44:54,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:54,075 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-11-06 22:44:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:44:54,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-11-06 22:44:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:54,079 INFO L225 Difference]: With dead ends: 82 [2020-11-06 22:44:54,079 INFO L226 Difference]: Without dead ends: 70 [2020-11-06 22:44:54,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:44:54,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-06 22:44:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2020-11-06 22:44:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-06 22:44:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-11-06 22:44:54,090 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 29 [2020-11-06 22:44:54,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:54,090 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-11-06 22:44:54,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:44:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-11-06 22:44:54,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 22:44:54,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:54,093 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:54,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:54,308 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:54,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1096400111, now seen corresponding path program 1 times [2020-11-06 22:44:54,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:54,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603076962] [2020-11-06 22:44:54,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:54,333 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:54,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698111777] [2020-11-06 22:44:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:54,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-06 22:44:54,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:54,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603076962] [2020-11-06 22:44:54,459 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:44:54,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698111777] [2020-11-06 22:44:54,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:54,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:44:54,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623938071] [2020-11-06 22:44:54,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:44:54,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:54,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:44:54,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:44:54,461 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-11-06 22:44:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:54,663 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2020-11-06 22:44:54,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:44:54,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-06 22:44:54,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:54,665 INFO L225 Difference]: With dead ends: 74 [2020-11-06 22:44:54,666 INFO L226 Difference]: Without dead ends: 51 [2020-11-06 22:44:54,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:44:54,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-06 22:44:54,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-11-06 22:44:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-06 22:44:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-11-06 22:44:54,676 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 31 [2020-11-06 22:44:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:54,676 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-11-06 22:44:54,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:44:54,677 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-11-06 22:44:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 22:44:54,677 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:54,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:54,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:54,891 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:54,892 INFO L82 PathProgramCache]: Analyzing trace with hash 438283439, now seen corresponding path program 4 times [2020-11-06 22:44:54,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:54,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068072599] [2020-11-06 22:44:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:54,910 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:54,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122468533] [2020-11-06 22:44:54,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:54,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 22:44:54,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:44:54,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-06 22:44:54,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:55,005 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-06 22:44:55,007 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:55,015 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:55,031 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-11-06 22:44:55,032 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:55,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:55,043 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:44:55,043 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:19 [2020-11-06 22:44:55,200 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 24 [2020-11-06 22:44:55,201 INFO L348 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2020-11-06 22:44:55,201 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 72 [2020-11-06 22:44:55,203 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:55,333 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-11-06 22:44:55,334 INFO L625 ElimStorePlain]: treesize reduction 27, result has 64.5 percent of original size [2020-11-06 22:44:55,335 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:55,336 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-06 22:44:55,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:49 [2020-11-06 22:44:55,337 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:55,400 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:55,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:55,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:55,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:55,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:55,692 INFO L244 Elim1Store]: Index analysis took 190 ms [2020-11-06 22:44:55,803 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-11-06 22:44:55,804 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:44:55,804 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 143 [2020-11-06 22:44:55,806 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-11-06 22:44:55,807 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:44:55,808 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-11-06 22:44:55,808 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:44:55,809 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-11-06 22:44:55,809 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:55,812 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:55,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:56,232 WARN L194 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-11-06 22:44:56,233 INFO L348 Elim1Store]: treesize reduction 17, result has 92.5 percent of original size [2020-11-06 22:44:56,233 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 63 treesize of output 252 [2020-11-06 22:44:56,237 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 2, 1] term [2020-11-06 22:44:56,237 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-06 22:44:56,238 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 2, 1] term [2020-11-06 22:44:56,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:44:56,239 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-11-06 22:44:56,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:44:56,240 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-11-06 22:44:56,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:44:56,241 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-11-06 22:44:56,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:56,254 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:56,695 WARN L194 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 47 [2020-11-06 22:44:56,696 INFO L625 ElimStorePlain]: treesize reduction 805, result has 14.5 percent of original size [2020-11-06 22:44:56,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:56,704 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-11-06 22:44:56,705 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:121, output treesize:101 [2020-11-06 22:44:56,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:56,911 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-11-06 22:44:56,913 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:57,042 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:57,261 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:44:57,654 WARN L194 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-11-06 22:44:57,657 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-06 22:44:57,708 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:44:57,709 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:44:57,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:57,721 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:44:57,786 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:44:57,804 INFO L244 Elim1Store]: Index analysis took 101 ms [2020-11-06 22:44:57,842 INFO L348 Elim1Store]: treesize reduction 17, result has 67.9 percent of original size [2020-11-06 22:44:57,843 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 107 [2020-11-06 22:44:57,846 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:57,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:57,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:57,925 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:44:57,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:57,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:58,070 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:44:58,152 INFO L244 Elim1Store]: Index analysis took 256 ms [2020-11-06 22:44:58,157 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 64 [2020-11-06 22:44:58,159 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:58,194 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:44:58,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:58,198 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:44:58,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:44:58,211 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 55 [2020-11-06 22:44:58,212 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-06 22:44:58,848 WARN L194 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-11-06 22:44:58,849 INFO L625 ElimStorePlain]: treesize reduction 53, result has 81.4 percent of original size [2020-11-06 22:44:58,850 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2020-11-06 22:44:58,851 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:212, output treesize:232 [2020-11-06 22:44:59,544 WARN L194 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-11-06 22:44:59,547 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 1] term [2020-11-06 22:44:59,547 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-06 22:45:00,095 WARN L194 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-11-06 22:45:00,097 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-06 22:45:00,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,849 INFO L244 Elim1Store]: Index analysis took 644 ms [2020-11-06 22:45:00,893 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:45:00,893 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 109 [2020-11-06 22:45:00,895 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:00,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:00,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,415 INFO L244 Elim1Store]: Index analysis took 474 ms [2020-11-06 22:45:01,603 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-11-06 22:45:01,604 INFO L348 Elim1Store]: treesize reduction 17, result has 81.7 percent of original size [2020-11-06 22:45:01,605 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 173 [2020-11-06 22:45:01,607 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:01,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:01,705 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:45:01,706 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 99 [2020-11-06 22:45:01,707 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:02,431 WARN L194 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2020-11-06 22:45:02,432 INFO L625 ElimStorePlain]: treesize reduction 248, result has 51.1 percent of original size [2020-11-06 22:45:02,446 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 10 dim-0 vars, and 3 xjuncts. [2020-11-06 22:45:02,446 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:274, output treesize:259 [2020-11-06 22:45:06,880 WARN L194 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 101 [2020-11-06 22:45:10,344 WARN L194 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 105 [2020-11-06 22:45:10,351 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-06 22:45:10,448 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:45:10,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:10,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:10,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:10,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:10,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:10,463 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:45:10,634 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-11-06 22:45:10,635 INFO L348 Elim1Store]: treesize reduction 10, result has 81.5 percent of original size [2020-11-06 22:45:10,635 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 82 treesize of output 65 [2020-11-06 22:45:10,637 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-11-06 22:45:10,638 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:10,650 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:10,679 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:45:10,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:10,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:10,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:10,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:10,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:10,704 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:45:10,962 WARN L194 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-11-06 22:45:10,963 INFO L348 Elim1Store]: treesize reduction 17, result has 84.0 percent of original size [2020-11-06 22:45:10,963 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 88 treesize of output 111 [2020-11-06 22:45:10,968 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-11-06 22:45:10,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:10,968 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-11-06 22:45:10,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:10,972 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-11-06 22:45:10,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:10,975 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:10,976 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-11-06 22:45:10,976 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:10,977 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-11-06 22:45:10,977 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:10,984 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:10,985 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:10,987 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:10,995 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:10,997 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 1] term [2020-11-06 22:45:10,997 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:10,999 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,000 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,001 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-11-06 22:45:11,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:11,002 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-11-06 22:45:11,002 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,008 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-11-06 22:45:11,009 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:11,009 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-11-06 22:45:11,010 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,012 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,013 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:45:11,014 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,014 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,018 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 1] term [2020-11-06 22:45:11,019 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,021 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:11,042 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-06 22:45:11,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:11,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:11,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:11,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:11,320 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-11-06 22:45:11,320 INFO L348 Elim1Store]: treesize reduction 32, result has 64.8 percent of original size [2020-11-06 22:45:11,321 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 94 treesize of output 82 [2020-11-06 22:45:11,328 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-11-06 22:45:11,329 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,331 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:11,525 WARN L194 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 27 [2020-11-06 22:45:11,526 INFO L625 ElimStorePlain]: treesize reduction 383, result has 10.1 percent of original size [2020-11-06 22:45:11,535 INFO L547 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:45:11,535 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 13 variables, input treesize:295, output treesize:7 [2020-11-06 22:45:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:11,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068072599] [2020-11-06 22:45:11,876 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:11,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122468533] [2020-11-06 22:45:11,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:45:11,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-06 22:45:11,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878604177] [2020-11-06 22:45:11,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 22:45:11,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:11,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 22:45:11,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=126, Unknown=1, NotChecked=0, Total=156 [2020-11-06 22:45:11,878 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 13 states. [2020-11-06 22:45:12,714 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-11-06 22:45:13,623 WARN L194 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-11-06 22:45:14,434 WARN L194 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-11-06 22:45:17,950 WARN L194 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2020-11-06 22:45:27,222 WARN L194 SmtUtils]: Spent 4.74 s on a formula simplification. DAG size of input: 108 DAG size of output: 108 [2020-11-06 22:45:29,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:29,932 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-11-06 22:45:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-06 22:45:29,937 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-11-06 22:45:29,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:29,938 INFO L225 Difference]: With dead ends: 71 [2020-11-06 22:45:29,938 INFO L226 Difference]: Without dead ends: 68 [2020-11-06 22:45:29,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=60, Invalid=281, Unknown=1, NotChecked=0, Total=342 [2020-11-06 22:45:29,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-06 22:45:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2020-11-06 22:45:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-06 22:45:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-11-06 22:45:29,950 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 31 [2020-11-06 22:45:29,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:29,950 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-11-06 22:45:29,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 22:45:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-11-06 22:45:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-06 22:45:29,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:29,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:30,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-06 22:45:30,153 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:30,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1595806767, now seen corresponding path program 5 times [2020-11-06 22:45:30,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:30,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068235353] [2020-11-06 22:45:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:30,171 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:30,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070938742] [2020-11-06 22:45:30,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:30,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-06 22:45:30,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:45:30,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-06 22:45:30,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:30,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068235353] [2020-11-06 22:45:30,338 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:30,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070938742] [2020-11-06 22:45:30,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:45:30,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-06 22:45:30,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394525152] [2020-11-06 22:45:30,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:45:30,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:30,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:45:30,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:45:30,340 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 9 states. [2020-11-06 22:45:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:30,977 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2020-11-06 22:45:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 22:45:30,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-11-06 22:45:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:30,979 INFO L225 Difference]: With dead ends: 103 [2020-11-06 22:45:30,979 INFO L226 Difference]: Without dead ends: 89 [2020-11-06 22:45:30,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:45:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-06 22:45:30,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 52. [2020-11-06 22:45:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-06 22:45:30,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-11-06 22:45:30,999 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 33 [2020-11-06 22:45:31,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:31,000 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-11-06 22:45:31,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:45:31,000 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-11-06 22:45:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-06 22:45:31,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:31,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:31,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:31,206 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:31,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:31,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1919081583, now seen corresponding path program 6 times [2020-11-06 22:45:31,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:31,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989355786] [2020-11-06 22:45:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:31,241 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:31,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256839981] [2020-11-06 22:45:31,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:31,329 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-06 22:45:31,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:45:31,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-06 22:45:31,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:31,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989355786] [2020-11-06 22:45:31,419 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:31,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256839981] [2020-11-06 22:45:31,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:45:31,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-06 22:45:31,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840188835] [2020-11-06 22:45:31,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:45:31,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:31,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:45:31,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:45:31,421 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 9 states. [2020-11-06 22:45:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:32,251 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-11-06 22:45:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 22:45:32,256 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-11-06 22:45:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:32,258 INFO L225 Difference]: With dead ends: 94 [2020-11-06 22:45:32,258 INFO L226 Difference]: Without dead ends: 82 [2020-11-06 22:45:32,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:45:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-06 22:45:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 54. [2020-11-06 22:45:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-06 22:45:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-11-06 22:45:32,271 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 33 [2020-11-06 22:45:32,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:32,271 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-11-06 22:45:32,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:45:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-11-06 22:45:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-06 22:45:32,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:32,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:32,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:32,489 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:32,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1824151403, now seen corresponding path program 1 times [2020-11-06 22:45:32,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:32,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202176652] [2020-11-06 22:45:32,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:32,507 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:32,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402542500] [2020-11-06 22:45:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:32,582 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:32,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:32,695 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:45:32,695 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:45:32,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-06 22:45:32,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:32 BoogieIcfgContainer [2020-11-06 22:45:32,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:32,980 INFO L168 Benchmark]: Toolchain (without parser) took 88036.18 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 128.8 MB in the beginning and 87.8 MB in the end (delta: 41.0 MB). Peak memory consumption was 73.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:32,981 INFO L168 Benchmark]: CDTParser took 1.33 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:32,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.12 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:32,981 INFO L168 Benchmark]: Boogie Preprocessor took 42.11 ms. Allocated memory is still 153.1 MB. Free memory was 118.3 MB in the beginning and 116.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:32,982 INFO L168 Benchmark]: RCFGBuilder took 667.22 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 133.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:32,982 INFO L168 Benchmark]: TraceAbstraction took 87026.93 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 133.4 MB in the beginning and 87.8 MB in the end (delta: 45.6 MB). Peak memory consumption was 76.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:32,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.33 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 281.12 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.11 ms. Allocated memory is still 153.1 MB. Free memory was 118.3 MB in the beginning and 116.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 667.22 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 133.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 87026.93 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 133.4 MB in the beginning and 87.8 MB in the end (delta: 45.6 MB). Peak memory consumption was 76.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=7, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 1 [L32] b[0] = 1 [L33] i=1 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=1, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=2] [L33] COND TRUE i