/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/verifythis/duplets.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:04:47,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:04:47,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:04:47,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:04:47,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:04:48,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:04:48,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:04:48,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:04:48,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:04:48,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:04:48,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:04:48,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:04:48,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:04:48,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:04:48,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:04:48,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:04:48,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:04:48,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:04:48,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:04:48,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:04:48,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:04:48,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:04:48,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:04:48,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:04:48,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 19:04:48,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 19:04:48,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 19:04:48,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 19:04:48,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 19:04:48,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 19:04:48,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:04:48,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:04:48,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:04:48,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:04:48,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:04:48,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:04:48,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:04:48,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:04:48,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:04:48,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:04:48,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:04:48,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:04:48,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:04:48,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:04:48,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:04:48,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:04:48,130 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:04:48,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:04:48,131 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:04:48,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:04:48,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:04:48,131 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:04:48,132 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:04:48,133 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:04:48,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:04:48,133 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:04:48,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:04:48,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:04:48,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:04:48,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:04:48,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:04:48,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:04:48,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:04:48,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:04:48,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:04:48,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:04:48,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:04:48,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:04:48,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:04:48,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:04:48,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:04:48,562 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:04:48,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/duplets.c [2020-12-22 19:04:48,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4da33f437/94737cbbf44b4ba29a42ddb7d786766e/FLAG1d4b82ac1 [2020-12-22 19:04:49,209 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:04:49,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/duplets.c [2020-12-22 19:04:49,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4da33f437/94737cbbf44b4ba29a42ddb7d786766e/FLAG1d4b82ac1 [2020-12-22 19:04:49,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4da33f437/94737cbbf44b4ba29a42ddb7d786766e [2020-12-22 19:04:49,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:04:49,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:04:49,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:04:49,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:04:49,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:04:49,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71dd7c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49, skipping insertion in model container [2020-12-22 19:04:49,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:04:49,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:04:49,749 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/duplets.c[485,498] [2020-12-22 19:04:49,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:04:49,789 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:04:49,803 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/duplets.c[485,498] [2020-12-22 19:04:49,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:04:49,835 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:04:49,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49 WrapperNode [2020-12-22 19:04:49,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:04:49,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:04:49,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:04:49,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:04:49,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:04:49,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:04:49,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:04:49,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:04:49,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (1/1) ... [2020-12-22 19:04:49,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:04:49,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:04:49,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:04:49,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:04:49,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (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 [2020-12-22 19:04:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:04:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:04:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:04:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:04:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:04:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:04:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:04:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:04:50,810 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:04:50,813 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-22 19:04:50,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:04:50 BoogieIcfgContainer [2020-12-22 19:04:50,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:04:50,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:04:50,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:04:50,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:04:50,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:04:49" (1/3) ... [2020-12-22 19:04:50,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6fe35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:04:50, skipping insertion in model container [2020-12-22 19:04:50,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:04:49" (2/3) ... [2020-12-22 19:04:50,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6fe35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:04:50, skipping insertion in model container [2020-12-22 19:04:50,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:04:50" (3/3) ... [2020-12-22 19:04:50,842 INFO L111 eAbstractionObserver]: Analyzing ICFG duplets.c [2020-12-22 19:04:50,854 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:04:50,864 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 41 error locations. [2020-12-22 19:04:50,885 INFO L253 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2020-12-22 19:04:50,925 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:04:50,925 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:04:50,926 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:04:50,927 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:04:50,927 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:04:50,927 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:04:50,927 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:04:50,927 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:04:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-12-22 19:04:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:04:50,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:50,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:50,969 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:50,977 INFO L82 PathProgramCache]: Analyzing trace with hash -115401356, now seen corresponding path program 1 times [2020-12-22 19:04:50,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:50,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701769572] [2020-12-22 19:04:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:51,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701769572] [2020-12-22 19:04:51,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:51,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:04:51,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355868477] [2020-12-22 19:04:51,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:04:51,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:51,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:04:51,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:04:51,216 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 2 states. [2020-12-22 19:04:51,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:51,236 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2020-12-22 19:04:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:04:51,238 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-22 19:04:51,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:51,248 INFO L225 Difference]: With dead ends: 107 [2020-12-22 19:04:51,248 INFO L226 Difference]: Without dead ends: 105 [2020-12-22 19:04:51,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:04:51,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-22 19:04:51,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-12-22 19:04:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-22 19:04:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-12-22 19:04:51,294 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 12 [2020-12-22 19:04:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:51,294 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-12-22 19:04:51,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:04:51,295 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-12-22 19:04:51,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:04:51,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:51,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:51,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:04:51,296 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:51,297 INFO L82 PathProgramCache]: Analyzing trace with hash -506579402, now seen corresponding path program 1 times [2020-12-22 19:04:51,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:51,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645594581] [2020-12-22 19:04:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:51,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645594581] [2020-12-22 19:04:51,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:51,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:04:51,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61492613] [2020-12-22 19:04:51,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:04:51,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:51,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:04:51,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:04:51,425 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 4 states. [2020-12-22 19:04:51,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:51,566 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2020-12-22 19:04:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:04:51,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 19:04:51,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:51,569 INFO L225 Difference]: With dead ends: 103 [2020-12-22 19:04:51,569 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 19:04:51,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:51,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 19:04:51,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-12-22 19:04:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 19:04:51,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-12-22 19:04:51,581 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 12 [2020-12-22 19:04:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:51,581 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-12-22 19:04:51,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:04:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-12-22 19:04:51,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:04:51,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:51,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:51,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:04:51,583 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:51,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:51,584 INFO L82 PathProgramCache]: Analyzing trace with hash -506579401, now seen corresponding path program 1 times [2020-12-22 19:04:51,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:51,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247148224] [2020-12-22 19:04:51,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:51,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247148224] [2020-12-22 19:04:51,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:51,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:04:51,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443511787] [2020-12-22 19:04:51,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:04:51,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:51,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:04:51,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:51,786 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 5 states. [2020-12-22 19:04:52,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:52,009 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2020-12-22 19:04:52,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:04:52,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 19:04:52,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:52,016 INFO L225 Difference]: With dead ends: 102 [2020-12-22 19:04:52,017 INFO L226 Difference]: Without dead ends: 102 [2020-12-22 19:04:52,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:04:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-22 19:04:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-12-22 19:04:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-22 19:04:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-12-22 19:04:52,039 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 12 [2020-12-22 19:04:52,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:52,040 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-12-22 19:04:52,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:04:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-12-22 19:04:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:04:52,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:52,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:52,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:04:52,044 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:52,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:52,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1475907729, now seen corresponding path program 1 times [2020-12-22 19:04:52,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:52,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402958582] [2020-12-22 19:04:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:52,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402958582] [2020-12-22 19:04:52,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:52,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:04:52,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868560850] [2020-12-22 19:04:52,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:04:52,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:52,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:04:52,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:04:52,191 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 6 states. [2020-12-22 19:04:52,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:52,391 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2020-12-22 19:04:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:04:52,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 19:04:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:52,392 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:04:52,393 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:04:52,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:04:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:04:52,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-12-22 19:04:52,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 19:04:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-12-22 19:04:52,400 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 13 [2020-12-22 19:04:52,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:52,401 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-12-22 19:04:52,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:04:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-12-22 19:04:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:04:52,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:52,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:52,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:04:52,403 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:52,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:52,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1860003047, now seen corresponding path program 1 times [2020-12-22 19:04:52,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:52,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638820697] [2020-12-22 19:04:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:52,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638820697] [2020-12-22 19:04:52,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:52,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:04:52,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007603937] [2020-12-22 19:04:52,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:04:52,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:52,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:04:52,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:04:52,517 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 6 states. [2020-12-22 19:04:52,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:52,603 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2020-12-22 19:04:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:04:52,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 19:04:52,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:52,604 INFO L225 Difference]: With dead ends: 96 [2020-12-22 19:04:52,604 INFO L226 Difference]: Without dead ends: 96 [2020-12-22 19:04:52,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:04:52,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-22 19:04:52,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-12-22 19:04:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 19:04:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-12-22 19:04:52,611 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 17 [2020-12-22 19:04:52,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:52,611 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-12-22 19:04:52,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:04:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-12-22 19:04:52,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:04:52,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:52,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:52,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:04:52,613 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:52,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:52,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1860003046, now seen corresponding path program 1 times [2020-12-22 19:04:52,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:52,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711399501] [2020-12-22 19:04:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:52,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711399501] [2020-12-22 19:04:52,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:52,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 19:04:52,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943011476] [2020-12-22 19:04:52,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:04:52,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:52,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:04:52,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:04:52,772 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 9 states. [2020-12-22 19:04:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:53,470 INFO L93 Difference]: Finished difference Result 238 states and 248 transitions. [2020-12-22 19:04:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:04:53,471 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-22 19:04:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:53,473 INFO L225 Difference]: With dead ends: 238 [2020-12-22 19:04:53,473 INFO L226 Difference]: Without dead ends: 238 [2020-12-22 19:04:53,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:04:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-12-22 19:04:53,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 100. [2020-12-22 19:04:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:04:53,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-12-22 19:04:53,501 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 17 [2020-12-22 19:04:53,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:53,502 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-12-22 19:04:53,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:04:53,502 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-12-22 19:04:53,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:04:53,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:53,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:53,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:04:53,505 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:53,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1825519578, now seen corresponding path program 1 times [2020-12-22 19:04:53,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:53,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129480344] [2020-12-22 19:04:53,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:53,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129480344] [2020-12-22 19:04:53,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:53,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:04:53,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751335596] [2020-12-22 19:04:53,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:04:53,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:53,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:04:53,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:04:53,685 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand 8 states. [2020-12-22 19:04:54,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:54,181 INFO L93 Difference]: Finished difference Result 235 states and 244 transitions. [2020-12-22 19:04:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:04:54,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-22 19:04:54,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:54,184 INFO L225 Difference]: With dead ends: 235 [2020-12-22 19:04:54,184 INFO L226 Difference]: Without dead ends: 235 [2020-12-22 19:04:54,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:04:54,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-12-22 19:04:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 100. [2020-12-22 19:04:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:04:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2020-12-22 19:04:54,190 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 18 [2020-12-22 19:04:54,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:54,190 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2020-12-22 19:04:54,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:04:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2020-12-22 19:04:54,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:04:54,191 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:54,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:54,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:04:54,192 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:54,192 INFO L82 PathProgramCache]: Analyzing trace with hash -757516168, now seen corresponding path program 1 times [2020-12-22 19:04:54,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:54,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783444384] [2020-12-22 19:04:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:54,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783444384] [2020-12-22 19:04:54,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:54,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:04:54,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967888214] [2020-12-22 19:04:54,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:04:54,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:54,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:04:54,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:04:54,268 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand 7 states. [2020-12-22 19:04:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:54,464 INFO L93 Difference]: Finished difference Result 171 states and 178 transitions. [2020-12-22 19:04:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:04:54,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-22 19:04:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:54,466 INFO L225 Difference]: With dead ends: 171 [2020-12-22 19:04:54,466 INFO L226 Difference]: Without dead ends: 171 [2020-12-22 19:04:54,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:04:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-12-22 19:04:54,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 100. [2020-12-22 19:04:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:04:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2020-12-22 19:04:54,470 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 19 [2020-12-22 19:04:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:54,471 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2020-12-22 19:04:54,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:04:54,471 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2020-12-22 19:04:54,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:04:54,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:54,472 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:04:54,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:04:54,472 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:54,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:54,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1978831198, now seen corresponding path program 1 times [2020-12-22 19:04:54,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:54,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461719718] [2020-12-22 19:04:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:54,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461719718] [2020-12-22 19:04:54,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46060929] [2020-12-22 19:04:54,537 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 [2020-12-22 19:04:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:54,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:04:54,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:54,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:04:54,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2020-12-22 19:04:54,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405962161] [2020-12-22 19:04:54,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:04:54,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:54,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:04:54,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:04:54,797 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand 5 states. [2020-12-22 19:04:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:54,870 INFO L93 Difference]: Finished difference Result 311 states and 324 transitions. [2020-12-22 19:04:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:04:54,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-22 19:04:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:54,873 INFO L225 Difference]: With dead ends: 311 [2020-12-22 19:04:54,873 INFO L226 Difference]: Without dead ends: 311 [2020-12-22 19:04:54,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:04:54,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-12-22 19:04:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 104. [2020-12-22 19:04:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-22 19:04:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-12-22 19:04:54,901 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 20 [2020-12-22 19:04:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:54,901 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-12-22 19:04:54,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:04:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-12-22 19:04:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:04:54,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:54,902 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] [2020-12-22 19:04:55,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 19:04:55,116 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:55,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1977657530, now seen corresponding path program 1 times [2020-12-22 19:04:55,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:55,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502307485] [2020-12-22 19:04:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:55,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502307485] [2020-12-22 19:04:55,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:55,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:04:55,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72337935] [2020-12-22 19:04:55,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:04:55,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:55,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:04:55,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:04:55,192 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 3 states. [2020-12-22 19:04:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:55,245 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2020-12-22 19:04:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:04:55,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:04:55,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:55,247 INFO L225 Difference]: With dead ends: 103 [2020-12-22 19:04:55,248 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 19:04:55,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:04:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 19:04:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-12-22 19:04:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 19:04:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2020-12-22 19:04:55,251 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 20 [2020-12-22 19:04:55,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:55,251 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2020-12-22 19:04:55,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:04:55,252 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2020-12-22 19:04:55,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:04:55,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:55,253 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] [2020-12-22 19:04:55,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:04:55,254 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:55,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1977657529, now seen corresponding path program 1 times [2020-12-22 19:04:55,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:55,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994310747] [2020-12-22 19:04:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:55,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994310747] [2020-12-22 19:04:55,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:55,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:04:55,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250404284] [2020-12-22 19:04:55,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:04:55,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:55,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:04:55,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:04:55,350 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 3 states. [2020-12-22 19:04:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:55,423 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-12-22 19:04:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:04:55,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:04:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:55,425 INFO L225 Difference]: With dead ends: 102 [2020-12-22 19:04:55,425 INFO L226 Difference]: Without dead ends: 102 [2020-12-22 19:04:55,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:04:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-22 19:04:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-12-22 19:04:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-22 19:04:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2020-12-22 19:04:55,431 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 20 [2020-12-22 19:04:55,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:55,432 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2020-12-22 19:04:55,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:04:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2020-12-22 19:04:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:04:55,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:55,438 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] [2020-12-22 19:04:55,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:04:55,438 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:55,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1177841247, now seen corresponding path program 1 times [2020-12-22 19:04:55,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:55,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48768498] [2020-12-22 19:04:55,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:55,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48768498] [2020-12-22 19:04:55,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:55,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:04:55,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885065016] [2020-12-22 19:04:55,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:04:55,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:55,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:04:55,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:04:55,505 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand 3 states. [2020-12-22 19:04:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:55,560 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2020-12-22 19:04:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:04:55,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:04:55,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:55,561 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:04:55,561 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:04:55,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:04:55,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:04:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-12-22 19:04:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 19:04:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-12-22 19:04:55,566 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 21 [2020-12-22 19:04:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:55,567 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-12-22 19:04:55,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:04:55,571 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-12-22 19:04:55,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:04:55,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:55,572 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] [2020-12-22 19:04:55,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:04:55,573 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:55,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:55,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1177841246, now seen corresponding path program 1 times [2020-12-22 19:04:55,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:55,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802288984] [2020-12-22 19:04:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:55,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802288984] [2020-12-22 19:04:55,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:55,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:04:55,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77003479] [2020-12-22 19:04:55,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:04:55,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:55,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:04:55,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:04:55,667 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 3 states. [2020-12-22 19:04:55,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:55,712 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-12-22 19:04:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:04:55,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:04:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:55,714 INFO L225 Difference]: With dead ends: 100 [2020-12-22 19:04:55,714 INFO L226 Difference]: Without dead ends: 100 [2020-12-22 19:04:55,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:04:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-22 19:04:55,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-12-22 19:04:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:04:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-12-22 19:04:55,717 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 21 [2020-12-22 19:04:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:55,717 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-12-22 19:04:55,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:04:55,718 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-12-22 19:04:55,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:04:55,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:55,719 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] [2020-12-22 19:04:55,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:04:55,719 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:55,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1012746752, now seen corresponding path program 1 times [2020-12-22 19:04:55,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:55,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759956288] [2020-12-22 19:04:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:56,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759956288] [2020-12-22 19:04:56,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:56,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 19:04:56,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083844500] [2020-12-22 19:04:56,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:04:56,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:56,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:04:56,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:04:56,027 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand 11 states. [2020-12-22 19:04:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:56,660 INFO L93 Difference]: Finished difference Result 167 states and 175 transitions. [2020-12-22 19:04:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:04:56,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-12-22 19:04:56,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:56,662 INFO L225 Difference]: With dead ends: 167 [2020-12-22 19:04:56,662 INFO L226 Difference]: Without dead ends: 167 [2020-12-22 19:04:56,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:04:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-12-22 19:04:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 100. [2020-12-22 19:04:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 19:04:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2020-12-22 19:04:56,666 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 22 [2020-12-22 19:04:56,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:56,666 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2020-12-22 19:04:56,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:04:56,666 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2020-12-22 19:04:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:04:56,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:56,670 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] [2020-12-22 19:04:56,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:04:56,671 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:56,671 INFO L82 PathProgramCache]: Analyzing trace with hash -527709617, now seen corresponding path program 1 times [2020-12-22 19:04:56,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:56,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093653248] [2020-12-22 19:04:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:56,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093653248] [2020-12-22 19:04:56,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:56,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:04:56,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289934953] [2020-12-22 19:04:56,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:04:56,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:56,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:04:56,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:04:56,725 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand 4 states. [2020-12-22 19:04:56,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:56,759 INFO L93 Difference]: Finished difference Result 161 states and 169 transitions. [2020-12-22 19:04:56,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:04:56,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-22 19:04:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:56,761 INFO L225 Difference]: With dead ends: 161 [2020-12-22 19:04:56,762 INFO L226 Difference]: Without dead ends: 161 [2020-12-22 19:04:56,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:56,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-22 19:04:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 102. [2020-12-22 19:04:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-22 19:04:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2020-12-22 19:04:56,768 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 25 [2020-12-22 19:04:56,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:56,768 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2020-12-22 19:04:56,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:04:56,768 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2020-12-22 19:04:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:04:56,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:56,772 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] [2020-12-22 19:04:56,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:04:56,773 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:56,773 INFO L82 PathProgramCache]: Analyzing trace with hash -527709487, now seen corresponding path program 1 times [2020-12-22 19:04:56,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:56,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586634194] [2020-12-22 19:04:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:56,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586634194] [2020-12-22 19:04:56,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:56,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:04:56,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493657553] [2020-12-22 19:04:56,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:04:56,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:56,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:04:56,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:04:56,831 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 4 states. [2020-12-22 19:04:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:56,885 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2020-12-22 19:04:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:04:56,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-22 19:04:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:56,890 INFO L225 Difference]: With dead ends: 98 [2020-12-22 19:04:56,890 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 19:04:56,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 19:04:56,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-12-22 19:04:56,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-22 19:04:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2020-12-22 19:04:56,894 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 25 [2020-12-22 19:04:56,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:56,895 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2020-12-22 19:04:56,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:04:56,895 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2020-12-22 19:04:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:04:56,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:56,897 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] [2020-12-22 19:04:56,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:04:56,898 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:56,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:56,899 INFO L82 PathProgramCache]: Analyzing trace with hash -527709486, now seen corresponding path program 1 times [2020-12-22 19:04:56,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:56,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886439598] [2020-12-22 19:04:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:56,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886439598] [2020-12-22 19:04:56,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:56,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:04:56,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114619953] [2020-12-22 19:04:56,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:04:56,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:56,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:04:56,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:04:56,963 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand 4 states. [2020-12-22 19:04:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:57,026 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-12-22 19:04:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:04:57,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-22 19:04:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:57,028 INFO L225 Difference]: With dead ends: 94 [2020-12-22 19:04:57,028 INFO L226 Difference]: Without dead ends: 94 [2020-12-22 19:04:57,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-22 19:04:57,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-12-22 19:04:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-22 19:04:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2020-12-22 19:04:57,032 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 25 [2020-12-22 19:04:57,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:57,032 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2020-12-22 19:04:57,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:04:57,033 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2020-12-22 19:04:57,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:04:57,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:57,033 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] [2020-12-22 19:04:57,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:04:57,034 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:57,034 INFO L82 PathProgramCache]: Analyzing trace with hash -857471629, now seen corresponding path program 1 times [2020-12-22 19:04:57,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:57,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740636225] [2020-12-22 19:04:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:57,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740636225] [2020-12-22 19:04:57,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999570267] [2020-12-22 19:04:57,089 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 [2020-12-22 19:04:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:57,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:04:57,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:57,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:57,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-12-22 19:04:57,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189578837] [2020-12-22 19:04:57,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:04:57,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:57,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:04:57,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:04:57,231 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 7 states. [2020-12-22 19:04:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:57,347 INFO L93 Difference]: Finished difference Result 338 states and 356 transitions. [2020-12-22 19:04:57,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:04:57,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-12-22 19:04:57,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:57,350 INFO L225 Difference]: With dead ends: 338 [2020-12-22 19:04:57,350 INFO L226 Difference]: Without dead ends: 338 [2020-12-22 19:04:57,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:04:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-22 19:04:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 107. [2020-12-22 19:04:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 19:04:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-12-22 19:04:57,355 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 25 [2020-12-22 19:04:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:57,355 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-12-22 19:04:57,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:04:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-12-22 19:04:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:04:57,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:57,356 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] [2020-12-22 19:04:57,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 19:04:57,564 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:57,564 INFO L82 PathProgramCache]: Analyzing trace with hash 602501265, now seen corresponding path program 1 times [2020-12-22 19:04:57,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:57,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650837794] [2020-12-22 19:04:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:57,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650837794] [2020-12-22 19:04:57,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817857493] [2020-12-22 19:04:57,633 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 [2020-12-22 19:04:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:57,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:04:57,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:57,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:04:57,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-12-22 19:04:57,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062364522] [2020-12-22 19:04:57,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:04:57,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:57,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:04:57,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:04:57,762 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 5 states. [2020-12-22 19:04:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:57,805 INFO L93 Difference]: Finished difference Result 158 states and 171 transitions. [2020-12-22 19:04:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:04:57,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 19:04:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:57,808 INFO L225 Difference]: With dead ends: 158 [2020-12-22 19:04:57,808 INFO L226 Difference]: Without dead ends: 158 [2020-12-22 19:04:57,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:04:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-22 19:04:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 107. [2020-12-22 19:04:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 19:04:57,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2020-12-22 19:04:57,813 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 27 [2020-12-22 19:04:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:57,813 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2020-12-22 19:04:57,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:04:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2020-12-22 19:04:57,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:04:57,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:57,815 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, 1, 1, 1] [2020-12-22 19:04:58,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:58,028 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:58,029 INFO L82 PathProgramCache]: Analyzing trace with hash -641089163, now seen corresponding path program 1 times [2020-12-22 19:04:58,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:58,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752392684] [2020-12-22 19:04:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:04:58,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752392684] [2020-12-22 19:04:58,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:04:58,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 19:04:58,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285155560] [2020-12-22 19:04:58,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:04:58,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:04:58,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:04:58,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:04:58,123 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand 9 states. [2020-12-22 19:04:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:04:58,429 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2020-12-22 19:04:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 19:04:58,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-22 19:04:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:04:58,431 INFO L225 Difference]: With dead ends: 212 [2020-12-22 19:04:58,431 INFO L226 Difference]: Without dead ends: 212 [2020-12-22 19:04:58,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 19:04:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-22 19:04:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 115. [2020-12-22 19:04:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-22 19:04:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2020-12-22 19:04:58,452 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 30 [2020-12-22 19:04:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:04:58,452 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2020-12-22 19:04:58,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:04:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2020-12-22 19:04:58,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:04:58,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:04:58,454 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] [2020-12-22 19:04:58,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:04:58,455 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:04:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:04:58,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1429377209, now seen corresponding path program 2 times [2020-12-22 19:04:58,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:04:58,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612207030] [2020-12-22 19:04:58,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:04:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:04:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:04:59,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612207030] [2020-12-22 19:04:59,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478309905] [2020-12-22 19:04:59,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:04:59,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:04:59,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:04:59,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-22 19:04:59,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:04:59,380 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:04:59,384 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:04:59,692 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 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-22 19:04:59,693 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:59,711 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:59,715 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. [2020-12-22 19:04:59,715 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:37 [2020-12-22 19:04:59,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:04:59,814 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2020-12-22 19:04:59,816 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:04:59,830 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:04:59,841 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. [2020-12-22 19:04:59,842 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:39 [2020-12-22 19:05:07,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:05:07,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:05:07,741 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:05:07,741 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 58 [2020-12-22 19:05:07,745 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-12-22 19:05:07,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:05:07,747 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-22 19:05:07,747 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:05:07,748 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-22 19:05:07,748 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:05:07,751 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-22 19:05:07,832 INFO L625 ElimStorePlain]: treesize reduction 26, result has 72.3 percent of original size [2020-12-22 19:05:07,836 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:05:07,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:05:07,842 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:05:07,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:05:07,844 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 4 disjuncts [2020-12-22 19:05:07,849 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:05:07,853 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:05:07,857 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:05:07,860 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 4 disjuncts [2020-12-22 19:05:07,864 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:05:07,865 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:344 [2020-12-22 19:05:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:05:08,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:05:08,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2020-12-22 19:05:08,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963964884] [2020-12-22 19:05:08,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-22 19:05:08,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:05:08,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-22 19:05:08,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=724, Unknown=5, NotChecked=0, Total=812 [2020-12-22 19:05:08,129 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand 29 states. [2020-12-22 19:05:09,899 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-12-22 19:05:11,478 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-12-22 19:05:13,641 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-22 19:05:15,800 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-12-22 19:05:18,022 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2020-12-22 19:05:22,287 WARN L197 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 105 DAG size of output: 56 [2020-12-22 19:05:30,494 WARN L197 SmtUtils]: Spent 8.16 s on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-12-22 19:05:34,701 WARN L197 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-12-22 19:05:42,914 WARN L197 SmtUtils]: Spent 8.17 s on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-12-22 19:05:51,159 WARN L197 SmtUtils]: Spent 8.20 s on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-12-22 19:05:55,417 WARN L197 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2020-12-22 19:05:59,576 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 25 [2020-12-22 19:06:03,802 WARN L197 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-12-22 19:06:10,071 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2020-12-22 19:06:16,324 WARN L197 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-12-22 19:06:20,508 WARN L197 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-12-22 19:06:26,735 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-12-22 19:07:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:07:21,045 INFO L93 Difference]: Finished difference Result 283 states and 295 transitions. [2020-12-22 19:07:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 19:07:21,046 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 30 [2020-12-22 19:07:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:07:21,047 INFO L225 Difference]: With dead ends: 283 [2020-12-22 19:07:21,048 INFO L226 Difference]: Without dead ends: 283 [2020-12-22 19:07:21,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 62.0s TimeCoverageRelationStatistics Valid=402, Invalid=1849, Unknown=5, NotChecked=0, Total=2256 [2020-12-22 19:07:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-12-22 19:07:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 115. [2020-12-22 19:07:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-22 19:07:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2020-12-22 19:07:21,054 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 30 [2020-12-22 19:07:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:07:21,055 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2020-12-22 19:07:21,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-22 19:07:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2020-12-22 19:07:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:07:21,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:07:21,055 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:07:21,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:07:21,257 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:07:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:07:21,258 INFO L82 PathProgramCache]: Analyzing trace with hash 996149570, now seen corresponding path program 2 times [2020-12-22 19:07:21,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:07:21,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473511410] [2020-12-22 19:07:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:07:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:07:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:07:21,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473511410] [2020-12-22 19:07:21,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571858419] [2020-12-22 19:07:21,362 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 [2020-12-22 19:07:21,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:07:21,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:07:21,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 19:07:21,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:07:21,457 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:07:21,458 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:21,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:21,465 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:07:21,465 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-12-22 19:07:21,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:07:21,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:07:21,554 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:07:21,554 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2020-12-22 19:07:21,556 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:21,574 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:21,580 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-22 19:07:21,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:45 [2020-12-22 19:07:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:07:21,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:07:21,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2020-12-22 19:07:21,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978924384] [2020-12-22 19:07:21,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 19:07:21,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:07:21,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 19:07:21,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:07:21,804 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 14 states. [2020-12-22 19:07:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:07:23,134 INFO L93 Difference]: Finished difference Result 353 states and 370 transitions. [2020-12-22 19:07:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:07:23,134 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-12-22 19:07:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:07:23,136 INFO L225 Difference]: With dead ends: 353 [2020-12-22 19:07:23,137 INFO L226 Difference]: Without dead ends: 353 [2020-12-22 19:07:23,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:07:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-12-22 19:07:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 114. [2020-12-22 19:07:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 19:07:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-12-22 19:07:23,142 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 30 [2020-12-22 19:07:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:07:23,142 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-12-22 19:07:23,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 19:07:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-12-22 19:07:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:07:23,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:07:23,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:07:23,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 19:07:23,355 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:07:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:07:23,356 INFO L82 PathProgramCache]: Analyzing trace with hash 815865598, now seen corresponding path program 1 times [2020-12-22 19:07:23,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:07:23,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683047391] [2020-12-22 19:07:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:07:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:07:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:07:23,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683047391] [2020-12-22 19:07:23,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19910725] [2020-12-22 19:07:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-22 19:07:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:07:23,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:07:23,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:07:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:07:23,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:07:23,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-12-22 19:07:23,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254078371] [2020-12-22 19:07:23,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 19:07:23,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:07:23,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 19:07:23,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:07:23,826 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 18 states. [2020-12-22 19:07:24,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:07:24,817 INFO L93 Difference]: Finished difference Result 389 states and 399 transitions. [2020-12-22 19:07:24,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 19:07:24,817 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 31 [2020-12-22 19:07:24,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:07:24,819 INFO L225 Difference]: With dead ends: 389 [2020-12-22 19:07:24,819 INFO L226 Difference]: Without dead ends: 389 [2020-12-22 19:07:24,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2020-12-22 19:07:24,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-12-22 19:07:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 114. [2020-12-22 19:07:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 19:07:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-12-22 19:07:24,825 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 31 [2020-12-22 19:07:24,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:07:24,825 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-12-22 19:07:24,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 19:07:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-12-22 19:07:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:07:24,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:07:24,827 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, 1, 1, 1, 1, 1] [2020-12-22 19:07:25,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:07:25,041 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:07:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:07:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash -2084810664, now seen corresponding path program 1 times [2020-12-22 19:07:25,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:07:25,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907220175] [2020-12-22 19:07:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:07:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:07:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:07:25,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907220175] [2020-12-22 19:07:25,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:07:25,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 19:07:25,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007193792] [2020-12-22 19:07:25,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 19:07:25,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:07:25,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 19:07:25,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:07:25,341 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 14 states. [2020-12-22 19:07:26,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:07:26,307 INFO L93 Difference]: Finished difference Result 206 states and 217 transitions. [2020-12-22 19:07:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 19:07:26,308 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-12-22 19:07:26,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:07:26,309 INFO L225 Difference]: With dead ends: 206 [2020-12-22 19:07:26,309 INFO L226 Difference]: Without dead ends: 206 [2020-12-22 19:07:26,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-12-22 19:07:26,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-22 19:07:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 118. [2020-12-22 19:07:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-22 19:07:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2020-12-22 19:07:26,314 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 32 [2020-12-22 19:07:26,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:07:26,314 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2020-12-22 19:07:26,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 19:07:26,315 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2020-12-22 19:07:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 19:07:26,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:07:26,315 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, 1, 1, 1, 1, 1, 1] [2020-12-22 19:07:26,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 19:07:26,316 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:07:26,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:07:26,316 INFO L82 PathProgramCache]: Analyzing trace with hash -204617025, now seen corresponding path program 1 times [2020-12-22 19:07:26,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:07:26,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799315359] [2020-12-22 19:07:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:07:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:07:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:07:26,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799315359] [2020-12-22 19:07:26,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:07:26,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:07:26,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447093419] [2020-12-22 19:07:26,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:07:26,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:07:26,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:07:26,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:07:26,349 INFO L87 Difference]: Start difference. First operand 118 states and 127 transitions. Second operand 4 states. [2020-12-22 19:07:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:07:26,398 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2020-12-22 19:07:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:07:26,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 19:07:26,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:07:26,399 INFO L225 Difference]: With dead ends: 114 [2020-12-22 19:07:26,399 INFO L226 Difference]: Without dead ends: 114 [2020-12-22 19:07:26,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:07:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-22 19:07:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-12-22 19:07:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 19:07:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-12-22 19:07:26,403 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 33 [2020-12-22 19:07:26,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:07:26,403 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-12-22 19:07:26,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:07:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-12-22 19:07:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 19:07:26,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:07:26,404 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, 1, 1, 1, 1, 1, 1] [2020-12-22 19:07:26,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 19:07:26,404 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:07:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:07:26,404 INFO L82 PathProgramCache]: Analyzing trace with hash -204617024, now seen corresponding path program 1 times [2020-12-22 19:07:26,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:07:26,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719022987] [2020-12-22 19:07:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:07:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:07:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:07:26,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719022987] [2020-12-22 19:07:26,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:07:26,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:07:26,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501118448] [2020-12-22 19:07:26,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:07:26,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:07:26,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:07:26,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:07:26,467 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 4 states. [2020-12-22 19:07:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:07:26,514 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2020-12-22 19:07:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:07:26,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 19:07:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:07:26,516 INFO L225 Difference]: With dead ends: 110 [2020-12-22 19:07:26,516 INFO L226 Difference]: Without dead ends: 110 [2020-12-22 19:07:26,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:07:26,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-22 19:07:26,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-22 19:07:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 19:07:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 119 transitions. [2020-12-22 19:07:26,521 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 119 transitions. Word has length 33 [2020-12-22 19:07:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:07:26,521 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 119 transitions. [2020-12-22 19:07:26,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:07:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 119 transitions. [2020-12-22 19:07:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:07:26,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:07:26,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:07:26,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 19:07:26,522 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:07:26,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:07:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1771467992, now seen corresponding path program 3 times [2020-12-22 19:07:26,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:07:26,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774167047] [2020-12-22 19:07:26,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:07:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:07:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:07:26,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774167047] [2020-12-22 19:07:26,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048883221] [2020-12-22 19:07:26,598 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 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 [2020-12-22 19:07:26,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 19:07:26,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:07:26,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-22 19:07:26,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:07:26,696 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:07:26,697 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:26,706 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:26,710 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 8 treesize of output 7 [2020-12-22 19:07:26,710 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:26,718 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:26,719 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:07:26,720 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:19 [2020-12-22 19:07:26,840 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:26,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:27,111 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 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-22 19:07:27,112 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:27,139 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:27,144 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. [2020-12-22 19:07:27,144 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:52 [2020-12-22 19:07:27,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:07:27,226 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2020-12-22 19:07:27,227 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:27,250 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:27,254 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. [2020-12-22 19:07:27,254 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:58, output treesize:54 [2020-12-22 19:07:29,406 INFO L443 ElimStorePlain]: Different costs {1=[|v_#valid_52|], 2=[|v_#length_45|]} [2020-12-22 19:07:29,418 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:29,419 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2020-12-22 19:07:29,420 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:07:29,423 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:29,457 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:29,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:07:29,479 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:07:29,479 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2020-12-22 19:07:29,481 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:29,548 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.4 percent of original size [2020-12-22 19:07:29,577 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-22 19:07:29,577 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:76, output treesize:87 [2020-12-22 19:07:29,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:07:29,977 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2020-12-22 19:07:30,026 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 19:07:30,293 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 19:07:30,635 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 19:07:31,121 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 19:07:31,456 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 19:07:31,888 INFO L547 ElimStorePlain]: Start of recursive call 2: 20 dim-0 vars, End of recursive call: 20 dim-0 vars, and 1 xjuncts. [2020-12-22 19:07:32,518 WARN L197 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 149 [2020-12-22 19:07:32,520 INFO L625 ElimStorePlain]: treesize reduction 45, result has 89.7 percent of original size [2020-12-22 19:07:32,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:07:32,580 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:07:32,580 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 90 [2020-12-22 19:07:32,583 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-12-22 19:07:32,583 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:07:32,584 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-22 19:07:32,584 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:32,584 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-22 19:07:32,585 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 19:07:32,587 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:07:33,268 WARN L197 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 153 [2020-12-22 19:07:33,270 INFO L625 ElimStorePlain]: treesize reduction 21, result has 95.1 percent of original size [2020-12-22 19:07:33,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:07:33,433 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:07:33,448 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,449 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 4 disjuncts [2020-12-22 19:07:33,452 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:07:33,453 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 4 disjuncts [2020-12-22 19:07:33,460 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:07:33,462 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:07:33,465 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,573 INFO L639 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-12-22 19:07:33,575 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,577 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:07:33,578 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,582 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,584 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,584 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,586 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,588 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,590 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,593 INFO L639 QuantifierPusher]: Distributing 10 conjuncts over 3 disjuncts [2020-12-22 19:07:33,594 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:07:33,607 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:07:33,608 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,612 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:07:33,614 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,615 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:07:33,621 INFO L639 QuantifierPusher]: Distributing 10 conjuncts over 36 disjuncts [2020-12-22 19:07:33,678 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,708 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 37 disjuncts [2020-12-22 19:07:33,939 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:33,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:07:33,972 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 38 disjuncts [2020-12-22 19:07:34,228 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:07:34,229 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:34,236 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-22 19:07:34,237 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:34,250 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 36 disjuncts [2020-12-22 19:07:34,546 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:34,558 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:34,590 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 36 disjuncts [2020-12-22 19:07:34,881 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:34,901 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:07:34,914 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 38 disjuncts [2020-12-22 19:07:35,120 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:35,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 37 disjuncts [2020-12-22 19:07:35,594 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:35,595 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:35,596 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:35,605 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:35,606 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:07:35,619 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 36 disjuncts [2020-12-22 19:07:35,670 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:35,682 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 19:07:35,700 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 37 disjuncts [2020-12-22 19:07:35,899 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:35,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 37 disjuncts [2020-12-22 19:07:36,076 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 20 dim-0 vars, and 1 xjuncts. [2020-12-22 19:07:36,077 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:114, output treesize:720 [2020-12-22 19:07:36,191 INFO L639 QuantifierPusher]: Distributing 8 conjuncts over 3 disjuncts [2020-12-22 19:07:36,192 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:36,193 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:36,195 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:36,197 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:07:36,199 INFO L639 QuantifierPusher]: Distributing 8 conjuncts over 3 disjuncts [2020-12-22 19:07:36,199 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:07:36,202 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:36,203 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:07:36,208 INFO L639 QuantifierPusher]: Distributing 8 conjuncts over 36 disjuncts [2020-12-22 19:07:36,387 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:36,402 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:07:36,412 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 38 disjuncts [2020-12-22 19:07:36,588 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:36,609 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 37 disjuncts [2020-12-22 19:07:36,854 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:36,863 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:36,878 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 36 disjuncts [2020-12-22 19:07:37,119 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:07:37,122 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 19:07:37,136 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 36 disjuncts [2020-12-22 19:07:37,738 INFO L639 QuantifierPusher]: Distributing 6 conjuncts over 3 disjuncts [2020-12-22 19:07:37,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:37,740 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:37,749 INFO L639 QuantifierPusher]: Distributing 6 conjuncts over 3 disjuncts [2020-12-22 19:07:37,751 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:07:37,756 INFO L639 QuantifierPusher]: Distributing 6 conjuncts over 36 disjuncts [2020-12-22 19:07:37,875 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:37,893 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 19:07:37,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 38 disjuncts [2020-12-22 19:07:38,061 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 19:07:38,083 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 37 disjuncts [2020-12-22 19:07:48,517 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-12-22 19:07:48,518 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-12-22 19:07:48,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:07:48,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 19:07:48,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779486225] [2020-12-22 19:07:48,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:07:48,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:07:48,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:07:48,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=296, Unknown=2, NotChecked=0, Total=342 [2020-12-22 19:07:48,521 INFO L87 Difference]: Start difference. First operand 110 states and 119 transitions. Second operand 7 states. [2020-12-22 19:07:48,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 19:07:48,732 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:432) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:759) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:254) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 32 more [2020-12-22 19:07:48,739 INFO L168 Benchmark]: Toolchain (without parser) took 179166.32 ms. Allocated memory was 151.0 MB in the beginning and 282.1 MB in the end (delta: 131.1 MB). Free memory was 125.1 MB in the beginning and 98.0 MB in the end (delta: 27.1 MB). Peak memory consumption was 160.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:07:48,739 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:07:48,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.44 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 113.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:07:48,740 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.63 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 111.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:07:48,740 INFO L168 Benchmark]: Boogie Preprocessor took 66.47 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 110.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:07:48,741 INFO L168 Benchmark]: RCFGBuilder took 863.23 ms. Allocated memory is still 151.0 MB. Free memory was 110.3 MB in the beginning and 114.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:07:48,741 INFO L168 Benchmark]: TraceAbstraction took 177914.71 ms. Allocated memory was 151.0 MB in the beginning and 282.1 MB in the end (delta: 131.1 MB). Free memory was 113.7 MB in the beginning and 98.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 148.3 MB. Max. memory is 8.0 GB. [2020-12-22 19:07:48,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.44 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 113.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.63 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 111.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.47 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 110.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 863.23 ms. Allocated memory is still 151.0 MB. Free memory was 110.3 MB in the beginning and 114.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 177914.71 ms. Allocated memory was 151.0 MB in the beginning and 282.1 MB in the end (delta: 131.1 MB). Free memory was 113.7 MB in the beginning and 98.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 148.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...